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| Product NDC Code | 71858-0112 | ||||||
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| Drug Name | Tirosint sol |
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| Type | Brand | ||||||
| Pharm Class | Thyroxine [CS], l-Thyroxine [EPC] |
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| Active Ingredients |
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| Route | ORAL | ||||||
| Dosage Form | SOLUTION | ||||||
| RxCUI drug identifier | 2056462, 2056466, 2056468, 2056470, 2056472, 2056474, 2056476, 2056478, 2056480, 2056482, 2056484, 2056486, 2056488, 2056490, 2056492, 2056494, 2056496, 2056498, 2056500, 2056502, 2056504, 2056506, 2056508, 2056510, 2566608, 2566610, 2566613, 2566615, 2566617, 2566619 |
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| Application Number | NDA206977 | ||||||
| Labeler Name | IBSA Pharma Inc. | ||||||
| Packages |
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| Check if available Online | Get Medication Prices online with Discount |
Overdosage of Tirosint SOL
Information about signs, symptoms, and laboratory findings of acute ovedosage and the general principles of overdose treatment.10 OVERDOSAGE The signs and symptoms of overdosage are those of hyperthyroidism [see Warnings and Precautions (5) and Adverse Reactions (6) ]. In addition, confusion and disorientation may occur. Cerebral embolism, shock, coma, and death have been reported. Seizures occurred in a 3-year-old child ingesting 3.6 mg of levothyroxine. Symptoms may not necessarily be evident or may not appear until several days after ingestion of levothyroxine sodium. Reduce the TIROSINT-SOL dose or discontinue temporarily if signs or symptoms of overdosage occur. Initiate appropriate supportive treatment as dictated by the patient's medical status. For current information on the management of poisoning or overdosage, contact the National Poison Control Center at 1-800-222-1222 or www.poison.org.
Adverse reactions
Information about undesirable effects, reasonably associated with use of the drug, that may occur as part of the pharmacological action of the drug or may be unpredictable in its occurrence. Adverse reactions include those that occur with the drug, and if applicable, with drugs in the same pharmacologically active and chemically related class. There is considerable variation in the listing of adverse reactions. They may be categorized by organ system, by severity of reaction, by frequency, by toxicological mechanism, or by a combination of these.6 ADVERSE REACTIONS Adverse reactions associated with TIROSINT-SOL therapy are primarily those of hyperthyroidism due to therapeutic overdosage [see Warnings and Precautions (5) and Overdosage (10) ]. They include the following: General: fatigue, increased appetite, weight loss, heat intolerance, fever, excessive sweating Central nervous system: headache, hyperactivity, nervousness, anxiety, irritability, emotional lability, insomnia Musculoskeletal: tremors, muscle weakness, muscle spasm Cardiovascular: palpitations, tachycardia, arrhythmias, increased pulse and blood pressure, heart failure, angina, myocardial infarction, cardiac arrest Respiratory : dyspnea Gastrointestinal (GI): diarrhea, vomiting, abdominal cramps, elevations in liver function tests Dermatologic: hair loss, flushing, rash Endocrine: decreased bone mineral density Reproductive: menstrual irregularities, impaired fertility Seizures have been reported rarely with the institution of levothyroxine therapy. Adverse reactions associated with TIROSINT-SOL are primarily those of hyperthyroidism due to therapeutic overdosage including: arrhythmias, myocardial infarction, dyspnea, muscle spasm, headache, nervousness, irritability, insomnia, tremors, muscle weakness, increased appetite, weight loss, diarrhea, heat intolerance, menstrual irregularities, and skin rash ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact IBSA Pharma Inc. at 1-800-587-3513, or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . Adverse Reactions in Pediatric Patients Pseudotumor cerebri and slipped capital femoral epiphysis have been reported in pediatric patients receiving levothyroxine therapy. Overtreatment may result in craniosynostosis in infants who have not undergone closure of the fontanelles, and in premature closure of the epiphyses in pediatric patients still experiencing growth with resultant compromised adult height. Hypersensitivity Reactions Hypersensitivity reactions to inactive ingredients have occurred in patients treated with thyroid hormone products. These include urticaria, pruritus, skin rash, flushing, angioedema, various GI symptoms (abdominal pain, nausea, vomiting and diarrhea), fever, arthralgia, serum sickness, and wheezing. Hypersensitivity to levothyroxine itself is not known to occur.
Tirosint SOL Drug Interactions
Information about and practical guidance on preventing clinically significant drug/drug and drug/food interactions that may occur in people taking the drug.7 DRUG INTERACTIONS See full prescribing information for drugs that affect thyroid hormone pharmacokinetics and metabolism (e.g., absorption, synthesis, secretion, catabolism, protein binding, and target tissue response) and may alter the therapeutic response to TIROSINT-SOL ( 7 ) 7.1 Drugs Known to Affect Thyroid Hormone Pharmacokinetics Many drugs can exert effects on thyroid hormone pharmacokinetics and metabolism (e.g., absorption, synthesis, secretion, catabolism, protein binding, and target tissue response) and may alter the therapeutic response to TIROSINT-SOL (Tables 5 to 8). Table 5. Drugs That May Decrease T4 Absorption (Hypothyroidism) Potential impact: Concurrent use may reduce the efficacy of TIROSINT-SOL by binding and delaying or preventing absorption, potentially resulting in hypothyroidism. Drug or Drug Class Effect Phosphate Binders (e.g., calcium carbonate, ferrous sulfate, sevelamer, lanthanum) Phosphate binders may bind to levothyroxine. Administer TIROSINT-SOL at least 4 hours apart from these agents. Orlistat Monitor patients treated concomitantly with orlistat and TIROSINT‑SOL for changes in thyroid function. Bile Acid Sequestrants (e.g., colesevelam, cholestyramine, colestipol Ion Exchange Resins (e.g., Kayexalate) Bile acid sequestrants and ion exchange resins are known to decrease levothyroxine absorption. Administer TIROSINT-SOL at least 4 hours prior to these drugs or monitor TSH levels. Sucralfate Antacids (e.g., aluminum & magnesium hydroxides, simethicone) Gastric acidity is an essential requirement for adequate absorption of levothyroxine. However, gastric acidity may not be as essential for the absorption of TIROSINT-SOL. Sucralfate and antacids may cause hypochlorhydria, affect gastric pH, and reduce levothyroxine absorption. Monitor patients appropriately. Table 6. Drugs That May Alter T4 and Triiodothyronine (T3) Serum Transport Without Affecting Free Thyroxine (FT4) Concentration (Euthyroidism) Drug or Drug Class Effect Clofibrate Estrogen-containing oral contraceptives Estrogens (oral) Heroin / Methadone 5-Fluorouracil Mitotane Tamoxifen These drugs may increase serum thyroxine-binding globulin (TBG) concentration. Androgens / Anabolic Steroids Asparaginase Glucocorticoids Slow-Release Nicotinic Acid These drugs may decrease serum TBG concentration. Potential impact (below): Administration of these agents with TIROSINT-SOL results in an initial transient increase in FT4. Continued administration results in a decrease in serum T4 and normal FT4 and TSH concentrations. Salicylates (> 2 g/day) Salicylates inhibit binding of T4 and T3 to TBG and transthyretin. An initial increase in serum FT4 is followed by return of FT4 to normal levels with sustained therapeutic serum salicylate concentrations, although total T4 levels may decrease by as much as 30%. Other drugs: Carbamazepine Furosemide (> 80 mg IV) Heparin Hydantoins Non-Steroidal Anti-inflammatory Drugs: Fenamates These drugs may cause protein-binding site displacement. Furosemide has been shown to inhibit the protein binding of T4 to TBG and albumin, causing an increase free‑T4 fraction in serum. Furosemide competes for T4-binding sites on TBG, prealbumin, and albumin, so that a single high dose can acutely lower the total T4 level. Phenytoin and carbamazepine reduce serum protein binding of levothyroxine, and total and free‑T4 may be reduced by 20% to 40%, but most patients have normal serum TSH levels and are clinically euthyroid. Closely monitor thyroid hormone parameters. Table 7. Drugs That May Alter Hepatic Metabolism of T4 (Hypothyroidism) Potential impact: Stimulation of hepatic microsomal drug-metabolizing enzyme activity may cause increased hepatic degradation of levothyroxine, resulting in increased TIROSINT-SOL requirements. Drug or Drug Class Effect Phenobarbital Rifampin Phenobarbital has been shown to reduce the response to thyroxine. Phenobarbital increases L-thyroxine metabolism by inducing uridine 5’ diphospho-glucuronosyltransferase (UGT) and leads to a lower T4 serum levels. Changes in thyroid status may occur if barbiturates are added or withdrawn from patients being treated for hypothyroidism. Rifampin has been shown to accelerate the metabolism of levothyroxine. Table 8. Drugs That May Decrease Conversion of T4 to T3 Potential impact: Administration of these enzyme inhibitors decreases the peripheral conversion of T4 to T3, leading to decreased T3 levels. However, serum T4 levels are usually normal but may occasionally be slightly increased. Drug or Drug Class Effect Beta-adrenergic antagonists (e.g., Propranolol > 160 mg/day) In patients treated with large doses of propranolol (> 160 mg/day), T3 and T4 levels change, TSH levels remain normal, and patients are clinically euthyroid. Actions of particular beta-adrenergic antagonists may be impaired when a hypothyroid patient is converted to the euthyroid state. Glucocorticoids (e.g., Dexamethasone > 4 mg/day) Short-term administration of large doses of glucocorticoids may decrease serum T3 concentrations by 30% with minimal change in serum T4 levels. However, long-term glucocorticoid therapy may result in slightly decreased T3 and T4 levels due to decreased TBG production (See above). Other drugs: Amiodarone Amiodarone inhibits peripheral conversion of T4 to T3 and may cause isolated biochemical changes (increase in serum free-T4, and decrease or normal free-T3) in clinically euthyroid patients. 7.2 Antidiabetic Therapy Addition of TIROSINT-SOL therapy in patients with diabetes mellitus may worsen glycemic control and result in increased antidiabetic agent or insulin requirements. Carefully monitor glycemic control, especially when thyroid therapy is started, changed, or discontinued [see Warnings and Precautions (5.5) ] . 7.3 Oral Anticoagulants TIROSINT-SOL increases the response to oral anticoagulant therapy. Therefore, a decrease in the dose of anticoagulant may be warranted with correction of the hypothyroid state or when the TIROSINT-SOL dose is increased. Closely monitor coagulation tests to permit appropriate and timely dosage adjustments. 7.4 Digitalis Glycosides TIROSINT-SOL may reduce the therapeutic effects of digitalis glycosides. Serum digitalis glycoside levels may decrease when a hypothyroid patient becomes euthyroid, necessitating an increase in the dose of digitalis glycosides. 7.5 Antidepressant Therapy Concurrent use of tricyclic (e.g., amitriptyline) or tetracyclic (e.g., maprotiline) antidepressants and TIROSINT-SOL may increase the therapeutic and toxic effects of both drugs, possibly due to increased receptor sensitivity to catecholamines. Toxic effects may include increased risk of cardiac arrhythmias and central nervous system stimulation. TIROSINT-SOL may accelerate the onset of action of tricyclics. Administration of sertraline in patients stabilized on TIROSINT-SOL may result in increased TIROSINT-SOL requirements. 7.6 Ketamine Concurrent use of ketamine and TIROSINT-SOL may produce marked hypertension and tachycardia. Closely monitor blood pressure and heart rate in these patients. 7.7 Sympathomimetics Concurrent use of sympathomimetics and TIROSINT-SOL may increase the effects of sympathomimetics or thyroid hormone. Thyroid hormones may increase the risk of coronary insufficiency when sympathomimetic agents are administered to patients with coronary artery disease. 7.8 Tyrosine-Kinase Inhibitors Concurrent use of tyrosine-kinase inhibitors such as imatinib may cause hypothyroidism. Closely monitor TSH levels in such patients. 7.9 Drug-Food Interactions Consumption of certain foods may affect TIROSINT-SOL absorption thereby necessitating adjustments in dosing [see Dosage and Administration (2.1) ] . Soybean flour (infant formula), cottonseed meal, walnuts, and dietary fiber may bind and decrease the absorption of TIROSINT-SOL from the gastrointestinal tract. Grapefruit juice may delay the absorption of levothyroxine and reduce its bioavailability. 7.10 Drug-Laboratory Test Interactions Consider changes in TBG concentration when interpreting T4 and T3 values. Measure and evaluate unbound (free) hormone and/or determine the free-T4 index (FT4I) in this circumstance. Pregnancy, infectious hepatitis, estrogens, estrogen-containing oral contraceptives, and acute intermittent porphyria increase TBG concentrations. Nephrosis, severe hypoproteinemia, severe liver disease, acromegaly, androgens and corticosteroids decrease TBG concentration. Familial hyper- or hypo-thyroxine binding globulinemias have been described, with the incidence of TBG deficiency approximating 1 in 9000.
Clinical pharmacology
Information about the clinical pharmacology and actions of the drug in humans.12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Thyroid hormones exert their physiologic actions through control of DNA transcription and protein synthesis. Triiodothyronine (T3) and L-thyroxine (T4) diffuse into the cell nucleus and bind to thyroid receptor proteins attached to DNA. This hormone nuclear receptor complex activates gene transcription and synthesis of messenger RNA and cytoplasmic proteins. The physiological actions of thyroid hormones are produced predominantly by T3, the majority of which (approximately 80%) is derived from T4 by deiodination in peripheral tissues. 12.2 Pharmacodynamics Oral levothyroxine sodium is a synthetic T4 hormone that exerts the same physiologic effect as endogenous T4, thereby maintaining normal T4 levels when a deficiency is present. 12.3 Pharmacokinetics Absorption Absorption of orally administered T4 from the gastrointestinal (GI) tract ranges from 40% to 80%. The majority of the levothyroxine dose is absorbed from the jejunum and upper ileum. The relative bioavailability of TIROSINT-SOL compared to TIROSINT capsules, is approximately 98%. T4 absorption is increased by fasting, and decreased in malabsorption syndromes and by certain foods such as soybeans. Dietary fiber decreases the bioavailability of T4. Absorption may also decrease with age. In addition, many drugs and foods affect T4 absorption [see Drug Interactions (7) ]. Effect of Food No clinically significant differences in levothyroxine pharmacokinetics were observed between Tirosint-SOL administered 15 minutes and 30 minutes before a high-fat high-calorie meal (about 800 – 1000 kcal, 50% fat) [see Dosage and Administration (2.1) ]. Distribution Circulating thyroid hormones are greater than 99% bound to plasma proteins, including thyroxine-binding globulin (TBG), thyroxine-binding prealbumin (TBPA), and thyroxine-binding albumin (TBA), whose capacities and affinities vary for each hormone. The higher affinity of both TBG and TBPA for T4 partially explains the higher serum levels, slower metabolic clearance, and longer half-life of T4 compared to T3. Protein-bound thyroid hormones exist in reverse equilibrium with small amounts of free hormone. Only unbound hormone is metabolically active. Many drugs and physiologic conditions affect the binding of thyroid hormones to serum proteins [see Drug Interactions (7) ]. Thyroid hormones do not readily cross the placental barrier [see Use in Specific Populations (8.1) ]. Elimination Metabolism T4 is slowly eliminated (Table 9) . The major pathway of thyroid hormone metabolism is through sequential deiodination. Approximately 80% of circulating T3 is derived from peripheral T4 by monodeiodination. The liver is the major site of degradation for both T4 and T3, with T4 deiodination also occurring at a number of additional sites, including the kidney and other tissues. Approximately 80% of the daily dose of T4 is deiodinated to yield equal amounts of T3 and reverse T3 (rT3). T3 and rT3 are further deiodinated to diiodothyronine. Thyroid hormones are also metabolized via conjugation with glucuronides and sulfates and excreted directly into the bile and gut where they undergo enterohepatic recirculation. Excretion Thyroid hormones are primarily eliminated by the kidneys. A portion of the conjugated hormone reaches the colon unchanged and is eliminated in the feces. Approximately 20% of T4 is eliminated in the stool. Urinary excretion of T4 decreases with age. Table 9. Pharmacokinetic Parameters of Thyroid Hormones in Euthyroid Patients Hormone Ratio in Thyroglobulin Biologic Potency Half-Life (Days) Protein Binding (%)* Levothyroxine (T4) 10 – 20 1 6 – 7** 99.96 Liothyronine (T3) 1 4 ≤ 2 99.5 Drug Interaction Study No clinically significant differences in TIROSINT-SOL pharmacokinetics were observed when orally coadministered with omeprazole.
| Hormone | Ratio in Thyroglobulin | Biologic Potency | Half-Life (Days) | Protein Binding (%)* |
|---|---|---|---|---|
| Levothyroxine (T4) | 10 – 20 | 1 | 6 – 7** | 99.96 |
| Liothyronine (T3) | 1 | 4 | ≤ 2 | 99.5 |
Mechanism of action
Information about the established mechanism(s) of the drugÕs action in humans at various levels (for example receptor, membrane, tissue, organ, whole body). If the mechanism of action is not known, this field contains a statement about the lack of information.12.1 Mechanism of Action Thyroid hormones exert their physiologic actions through control of DNA transcription and protein synthesis. Triiodothyronine (T3) and L-thyroxine (T4) diffuse into the cell nucleus and bind to thyroid receptor proteins attached to DNA. This hormone nuclear receptor complex activates gene transcription and synthesis of messenger RNA and cytoplasmic proteins. The physiological actions of thyroid hormones are produced predominantly by T3, the majority of which (approximately 80%) is derived from T4 by deiodination in peripheral tissues.
Pharmacodynamics
Information about any biochemical or physiologic pharmacologic effects of the drug or active metabolites related to the drugÕs clinical effect in preventing, diagnosing, mitigating, curing, or treating disease, or those related to adverse effects or toxicity.12.2 Pharmacodynamics Oral levothyroxine sodium is a synthetic T4 hormone that exerts the same physiologic effect as endogenous T4, thereby maintaining normal T4 levels when a deficiency is present.
Pharmacokinetics
Information about the clinically significant pharmacokinetics of a drug or active metabolites, for instance pertinent absorption, distribution, metabolism, and excretion parameters.12.3 Pharmacokinetics Absorption Absorption of orally administered T4 from the gastrointestinal (GI) tract ranges from 40% to 80%. The majority of the levothyroxine dose is absorbed from the jejunum and upper ileum. The relative bioavailability of TIROSINT-SOL compared to TIROSINT capsules, is approximately 98%. T4 absorption is increased by fasting, and decreased in malabsorption syndromes and by certain foods such as soybeans. Dietary fiber decreases the bioavailability of T4. Absorption may also decrease with age. In addition, many drugs and foods affect T4 absorption [see Drug Interactions (7) ]. Effect of Food No clinically significant differences in levothyroxine pharmacokinetics were observed between Tirosint-SOL administered 15 minutes and 30 minutes before a high-fat high-calorie meal (about 800 – 1000 kcal, 50% fat) [see Dosage and Administration (2.1) ]. Distribution Circulating thyroid hormones are greater than 99% bound to plasma proteins, including thyroxine-binding globulin (TBG), thyroxine-binding prealbumin (TBPA), and thyroxine-binding albumin (TBA), whose capacities and affinities vary for each hormone. The higher affinity of both TBG and TBPA for T4 partially explains the higher serum levels, slower metabolic clearance, and longer half-life of T4 compared to T3. Protein-bound thyroid hormones exist in reverse equilibrium with small amounts of free hormone. Only unbound hormone is metabolically active. Many drugs and physiologic conditions affect the binding of thyroid hormones to serum proteins [see Drug Interactions (7) ]. Thyroid hormones do not readily cross the placental barrier [see Use in Specific Populations (8.1) ]. Elimination Metabolism T4 is slowly eliminated (Table 9) . The major pathway of thyroid hormone metabolism is through sequential deiodination. Approximately 80% of circulating T3 is derived from peripheral T4 by monodeiodination. The liver is the major site of degradation for both T4 and T3, with T4 deiodination also occurring at a number of additional sites, including the kidney and other tissues. Approximately 80% of the daily dose of T4 is deiodinated to yield equal amounts of T3 and reverse T3 (rT3). T3 and rT3 are further deiodinated to diiodothyronine. Thyroid hormones are also metabolized via conjugation with glucuronides and sulfates and excreted directly into the bile and gut where they undergo enterohepatic recirculation. Excretion Thyroid hormones are primarily eliminated by the kidneys. A portion of the conjugated hormone reaches the colon unchanged and is eliminated in the feces. Approximately 20% of T4 is eliminated in the stool. Urinary excretion of T4 decreases with age. Table 9. Pharmacokinetic Parameters of Thyroid Hormones in Euthyroid Patients Hormone Ratio in Thyroglobulin Biologic Potency Half-Life (Days) Protein Binding (%)* Levothyroxine (T4) 10 – 20 1 6 – 7** 99.96 Liothyronine (T3) 1 4 ≤ 2 99.5 Drug Interaction Study No clinically significant differences in TIROSINT-SOL pharmacokinetics were observed when orally coadministered with omeprazole.
| Hormone | Ratio in Thyroglobulin | Biologic Potency | Half-Life (Days) | Protein Binding (%)* |
|---|---|---|---|---|
| Levothyroxine (T4) | 10 – 20 | 1 | 6 – 7** | 99.96 |
| Liothyronine (T3) | 1 | 4 | ≤ 2 | 99.5 |
Contraindications
Information about situations in which the drug product is contraindicated or should not be used because the risk of use clearly outweighs any possible benefit, including the type and nature of reactions that have been reported.4 CONTRAINDICATIONS TIROSINT-SOL is contraindicated in patients with: Hypersensitivity to glycerol, the inactive ingredient in TIROSINT-SOL [see Adverse Events (6) ]. Uncorrected adrenal insufficiency [see Warnings and Precautions (5.4) ] Hypersensitivity to glycerol ( 4 ) Uncorrected adrenal insufficiency ( 4 )
Description
General information about the drug product, including the proprietary and established name of the drug, the type of dosage form and route of administration to which the label applies, qualitative and quantitative ingredient information, the pharmacologic or therapeutic class of the drug, and the chemical name and structural formula of the drug.11 DESCRIPTION TIROSINT-SOL (levothyroxine sodium) oral solution contains synthetic L-3,3',5,5'-tetraiodothyronine sodium salt [levothyroxine (T4) sodium]. Synthetic T4 is chemically identical to that produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C 15 H 10 I 4 NNaO 4 ∙ x H 2 O (where x = 5), molecular weight of 798.86 g/mol (anhydrous), and structural formula as shown: TIROSINT-SOL oral solution is a clear, colorless to slightly yellow solution supplied in a 1 mL white, non-transparent, unit-dose ampule and is available in the following strengths (mcg/mL): 13, 25, 37.5, 44, 50, 62.5, 75, 88, 100, 112, 125, 137, 150, 175, 200. The inactive ingredients in TIROSINT-SOL are glycerol and water. Chemical Structure
Dosage and administration
Information about the drug product’s dosage and administration recommendations, including starting dose, dose range, titration regimens, and any other clinically sigificant information that affects dosing recommendations.2 DOSAGE AND ADMINISTRATION Administer once daily, on an empty stomach, 15 minutes before breakfast ( 2.1 ) Administer at least 4 hours before or after drugs that are known to interfere with absorption ( 2.1 ) Evaluate the need for dose adjustments when regularly administering within an hour of certain foods that may affect TIROSINT-SOL absorption ( 2.1 ) To administer TIROSINT-SOL in water, squeeze the contents of one single unit-dose ampule into a glass or cup containing water ( 2.1 ) To administer TIROSINT-SOL directly, either squeeze it into the mouth OR onto a spoon and immediately consume ( 2.1 ) Starting dose depends on a variety of factors, including age, body weight, cardiovascular status, and concomitant medications, co-administered food, and the specific nature of the condition being treated. Peak therapeutic effect may not be attained for 4-6 weeks ( 2.2 ) See full prescribing information for dosing in specific patient populations ( 2.3 ) Adequacy of therapy determined with periodic monitoring of TSH and/or T4 as well as clinical status ( 2.4 ) 2.1 General Administration Information Administer TIROSINT-SOL as a single daily oral dose, on an empty stomach,15 minutes before breakfast. Administer TIROSINT-SOL at least 4 hours before or after drugs known to interfere with TIROSINT-SOL absorption [see Drug Interactions (7.1)] . Evaluate the need for dose adjustments when regularly administering within an hour of certain foods that may affect TIROSINT-SOL absorption [see Dosage and Administration (2.2 and 2.3) , Drug Interactions (7.9) and Clinical Pharmacology (12.3) ] . TIROSINT-SOL may be administered in water or directly into the mouth: To administer TIROSINT-SOL in water, squeeze the contents of one single unit-dose ampule into a glass or cup containing water. Stir the diluted TIROSINT-SOL and drink all of it immediately. Rinse the glass or cup with additional water and drink the contents to ensure that the total dose is taken. Do not dilute TIROSINT-SOL in a medium other than water. Open the ampule and prepare the solution immediately before intake. To administer TIROSINT-SOL directly (without water), either squeeze it into the mouth OR onto a spoon and immediately consume. 2.2 Important Considerations for Dosing The dosage of TIROSINT-SOL for hypothyroidism or pituitary TSH suppression depends on a variety of factors including: the patient's age, body weight, cardiovascular status, concomitant medical conditions (including pregnancy), concomitant medications, co-administered food, and the specific nature of the condition being treated [see Dosage and Administration (2.3), Warnings and Precautions (5), and Drug Interactions (7)] . Dosing must be individualized to account for these factors and dosage adjustments made based on periodic assessment of the patient's clinical response and laboratory parameters [see Dosage and Administration (2.4)] . For adult patients with primary hypothyroidism, titrate until the patient is clinically euthyroid and the serum TSH returns to normal [see Dosage and Administration (2.3)]. For secondary or tertiary hypothyroidism, serum TSH is not a reliable measure of TIROSINT-SOL dosage adequacy and should not be used to monitor therapy. Use the serum free-T4 level to titrate TIROSINT-SOL dosing until the patient is clinically euthyroid and the serum free-T4 level is restored to the upper half of the normal range [see Dosage and Administration (2.3)]. The peak therapeutic effect of a given dose of TIROSINT-SOL may not be attained for 4 to 6 weeks. 2.3 Recommended Dosage and Titration Primary, Secondary, and Tertiary Hypothyroidism in Adults The recommended starting daily dosage of TIROSINT-SOL in adults with primary, secondary, or tertiary hypothyroidism is based on age and comorbid cardiac conditions, as described in Table 1. For patients at risk of atrial fibrillation or patients with underlying cardiac disease, start with a lower dosage and titrate the dosage more slowly to avoid exacerbation of cardiac symptoms. Dosage titration is based on serum TSH or free-T4 [see Dosage and Administration (2.2) ]. Table 1. TIROSINT-SOL Dosing Guidelines for Hypothyroidism in Adults* Patient Population Starting Dosage Dosage Titration Based on Serum TSH or Free-T4 Adults diagnosed with hypothyroidism Full replacement dose is 1.6 mcg/kg/day. Some patients require a lower starting dose. Titrate dosage by 12.5 to 25 mcg increments every 4 to 6 weeks, as needed until the patient is euthyroid. Adults at risk for atrial fibrillation or with underlying cardiac disease Lower starting dose (less than 1.6 mcg/kg/day) Titrate dosage every 6 to 8 weeks, as needed until the patient is euthyroid. Geriatric patients Lower starting dose (less than 1.6 mcg/kg/day) *Dosages greater than 200 mcg/day are seldom required. An inadequate response to daily dosages greater than 300 mcg/day is rare and may indicate poor compliance, malabsorption, drug interactions, or a combination of these factors [see Dosage and Administration (2.1) and Drug Interactions (7) ]. Primary, Secondary, and Tertiary Hypothyroidism in Pediatric Patients The recommended starting daily dosage of TIROSINT-SOL in pediatric patients with primary, secondary, or tertiary hypothyroidism is based on body weight and changes with age as described in Table 2. Titrate the dosage (every 2 weeks) as needed based on serum TSH or free-T4 until the patient is euthyroid [see Dosage and Administration (2.2) ]. Table 2. TIROSINT-SOL Dosing Guidelines for Hypothyroidism in Pediatric Patients Age Starting Daily Dosage Per Kg Body Weight * 0-3 months 10-15 mcg/kg/day 3-6 months 8-10 mcg/kg/day 6-12 months 6-8 mcg/kg/day 1-5 years 5-6 mcg/kg/day 6-12 years 4-5 mcg/kg/day Greater than 12 years but growth and puberty incomplete 2-3 mcg/kg/day Growth and puberty complete 1.6 mcg/kg/day *Adjust dosage based on clinical response and laboratory parameters [see Dosage and Administration (2.4) and Use in Specific Populations (8.4) ]. Pediatric Patients from Birth to 3 Months of Age at Risk for Cardiac Failure Start at a lower starting dosage and increase the dosage every 4 to 6 weeks as needed based on clinical and laboratory response. Pediatric Patients at Risk for Hyperactivity To minimize the risk of hyperactivity, start at one-fourth the recommended full replacement dosage, and increase on a weekly basis by one-fourth the full recommended replacement dosage until the full recommended replacement dosage is reached. Hypothyroidism in Pregnant Patients For pregnant patients with pre-existing hypothyroidism, measure serum TSH and free-T4 as soon as pregnancy is confirmed and, at minimum, during each trimester of pregnancy. In pregnant patients with primary hypothyroidism, maintain serum TSH in the trimester-specific reference range. The recommended daily dosage of TIROSINT-SOL in pregnant patients is described in Table 3. Table 3. TIROSINT-SOL Dosing Guidelines for Hypothyroidism in Pregnant Patients Patient Population Starting Dosage Dose Adjustment and Titration Pre-existing primary hypothyroidism with serum TSH above normal trimester-specific range Pre-pregnancy dosage may increase during pregnancy Increase TIROSINT-SOL dosage by 12.5 to 25 mcg per day. Monitor TSH every 4 weeks until a stable dose is reached and serum TSH is within normal trimester-specific range. Reduce TIROSINT-SOL dosage to pre-pregnancy levels immediately after delivery. Monitor serum TSH 4 to 8 weeks postpartum. New onset hypothyroidism TSH > 10 mIU per liter) 1.6 mcg/kg/day Monitor serum TSH every 4 weeks and adjust TIROSINT-SOL dosage until serum TSH is within normal trimester-specific range. New onset hypothyroidism (TSH < 10 mIU per liter) 1.0 mcg/kg/day TSH Suppression in Well-differentiated Thyroid Cancer in Adults and Pediatric Patients The TIROSINT-SOL dosage is based on the target level of TSH suppression for the stage and clinical status of thyroid cancer. 2.4 Monitoring TSH and/or Thyroxine (T4) Levels Assess the adequacy of therapy by periodic assessment of laboratory tests and clinical evaluation. Persistent clinical and laboratory evidence of hypothyroidism, despite an apparent adequate replacement dose of TIROSINT-SOL, may be evidence of inadequate absorption, poor compliance, drug interactions, or a combination of these factors. Adults In adult patients with primary hypothyroidism, monitor serum TSH levels after an interval of 6 to 8 weeks after any change in dosage. In patients on a stable and appropriate replacement dosage, evaluate clinical and biochemical response every 6 to 12 months and whenever there is a change in the patient's clinical status. Pediatrics Patients In patients with hypothyroidism, assess the adequacy of replacement therapy by measuring both serum TSH and total or free-T4. Monitor TSH and total or free-T4 in pediatric patients as follows: 2 and 4 weeks after the initiation of treatment, 2 weeks after any change in dosage, and then every 3 to 12 months thereafter following dosage stabilization until growth is completed. Poor compliance or abnormal values may necessitate more frequent monitoring. Perform routine clinical examination, including assessment of mental and physical growth and development, and bone maturation, at regular intervals. The general aim of therapy is to normalize the serum TSH level. TSH may not normalize in some patients due to in utero hypothyroidism causing a resetting of pituitary-thyroid feedback. Failure of the serum T4 to increase into the upper half of the normal range within 2 weeks of initiation of TIROSINT-SOL therapy and/or of the serum TSH to decrease below 20 mIU per Liter within 4 weeks may indicate the patient is not receiving adequate therapy. Assess compliance, dose of medication administered, and method of administration prior to increasing the dose of TIROSINT-SOL [see Warning and Precautions (5.1) and Use in Specific Populations (8.4) ] . Secondary (Pituitary) and Tertiary (Hypothalamic) Hypothyroidism Monitor serum free-T4 levels and maintain in the upper half of the normal range in these patients.
Dosage forms and strengths
Information about all available dosage forms and strengths for the drug product to which the labeling applies. This field may contain descriptions of product appearance.3 DOSAGE FORMS AND STRENGTHS TIROSINT-SOL oral solution is a clear, colorless to slightly yellow solution supplied in a 1 mL white, non-transparent, unit-dose ampule. Each ampule bears a colored label with the dosage strength and the product name (TIROSINT-SOL) (Table 4). Table 4. TIROSINT-SOL Solution Strengths and Identifying Features Strength (mcg/mL) Color 13 Green 25 Orange 37.5 Dark Blue 44 Red 50 White 75 Purple 62.5 Grey 88 Olive 100 Yellow 112 Rose 125 Brown 137 Turquoise 150 Blue 175 Lilac 200 Pink Oral solution: 13, 25, 37.5, 44, 50, 62.5, 75, 88, 100, 112, 125, 137, 150, 175, 200 mcg/mL ( 3 )
| Strength (mcg/mL) | Color |
|---|---|
| 13 | Green |
| 25 | Orange |
| 37.5 | Dark Blue |
| 44 | Red |
| 50 | White |
| 75 | Purple |
| 62.5 | Grey |
| 88 | Olive |
| 100 | Yellow |
| 112 | Rose |
| 125 | Brown |
| 137 | Turquoise |
| 150 | Blue |
| 175 | Lilac |
| 200 | Pink |
Indications and usage
A statement of each of the drug products indications for use, such as for the treatment, prevention, mitigation, cure, or diagnosis of a disease or condition, or of a manifestation of a recognized disease or condition, or for the relief of symptoms associated with a recognized disease or condition. This field may also describe any relevant limitations of use.1 INDICATION AND USAGE TIROSINT-SOL is L-thyroxine (T4) indicated in adult and pediatric patients, including neonates, for: Hypothyroidism - As replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism ( 1 ) Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression - As an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer ( 1 ) Limitations of Use Not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients ( 1 ) Not indicated for treatment of transient hypothyroidism during the recovery phase of subacute thyroiditis ( 1 ) Hypothyroidism TIROSINT-SOL is indicated in adult and pediatric patients, including neonates, as a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism. Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression TIROSINT-SOL is indicated in adult and pediatric patients, including neonates, as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer. Limitations of Use Tirosint-SOL is not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients as there are no clinical benefits and overtreatment with TIROSINT-SOL may induce hyperthyroidism [see Warnings and Precautions (5.1) ] . Tirosint-SOL is not indicated for treatment of transient hypothyroidism during the recovery phase of subacute thyroiditis.
Spl product data elements
Usually a list of ingredients in a drug product.Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS Tirosint SOL Levothyroxine Sodium GLYCERIN WATER LEVOTHYROXINE SODIUM LEVOTHYROXINE LEVOTHYROXINE SODIUM ANHYDROUS
Carcinogenesis and mutagenesis and impairment of fertility
Information about carcinogenic, mutagenic, or fertility impairment potential revealed by studies in animals. Information from human data about such potential is part of the warnings field.13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenicity studies in animals to evaluate the carcinogenic potential of levothyroxine have not been performed. Studies to evaluate mutagenic potential and animal fertility have not been performed.
Nonclinical toxicology
Information about toxicology in non-human subjects.13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenicity studies in animals to evaluate the carcinogenic potential of levothyroxine have not been performed. Studies to evaluate mutagenic potential and animal fertility have not been performed.
Package label principal display panel
The content of the principal display panel of the product package, usually including the product’s name, dosage forms, and other key information about the drug product.PRINCIPAL DISPLAY PANEL - 13 microgram/mL Ampule Pouch Carton NDC 71858-0105-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 13 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 25 microgram/mL Ampule Pouch Carton NDC 71858-0110-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 25 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 37.5 microgram/mL Ampule Pouch Carton NDC 71858-0112-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 37.5 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 44 microgram/mL Ampule Pouch Carton NDC 71858-0113-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 44 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 50 microgram/mL Ampule Pouch Carton NDC 71858-0115-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 50 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 62.5 microgram/mL Ampule Pouch Carton NDC 71858-0117-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 62.5 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 75 microgram/mL Ampule Pouch Carton NDC 71858-0120-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 75 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 88 microgram/mL Ampule Pouch Carton NDC 71858-0125-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 88 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 100 microgram/mL Ampule Pouch Carton NDC 71858-0130-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 100 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 112 microgram/mL Ampule Pouch Carton NDC 71858-0135-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 112 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 125 microgram/mL Ampule Pouch Carton NDC 71858-0140-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 125 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 137 microgram/mL Ampule Pouch Carton NDC 71858-0145-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 137 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 150 microgram/mL Ampule Pouch Carton NDC 71858-0150-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 150 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 175 microgram/mL Ampule Pouch Carton NDC 71858-0155-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 175 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
PRINCIPAL DISPLAY PANEL - 200 microgram/mL Ampule Pouch Carton NDC 71858-0160-5 TIROSINT ® - SOL (levothyroxine sodium) Oral Solution 200 microgram/mL For Oral Use Only – NOT for Inhalation, Injection or Ophthalmic Use R x Only 6 pouches x 5 ampules IBSA Carton-box
Recent major changes
A list of the section(s) that contain substantive changes that have been approved by FDA in the product labeling. The headings and subheadings, if appropriate, affected by the change are listed together with each section’s identifying number and the month and year on which the change was incorporated in the labeling.RECENT MAJOR CHANGES Indications and Usage ( 1 ) 11/2023 Dosage and Administration ( 2.1 ) 11/2023 Dosage and Administration ( 2.2 ) 11/2023 Dosage and Administration ( 2.3 ) 11/2023 Warnings and Precautions ( 5.1 ) 11/2023 Warnings and Precautions ( 5.4 ) 11/2023
| Indications and Usage ( | 11/2023 |
| Dosage and Administration ( | 11/2023 |
| Dosage and Administration ( | 11/2023 |
| Dosage and Administration ( | 11/2023 |
| Warnings and Precautions ( | 11/2023 |
| Warnings and Precautions ( | 11/2023 |
Spl unclassified section
Information not classified as belonging to one of the other fields. Approximately 40% of labeling with effective_time between June 2009 and August 2014 have information in this field.Manufactured for IBSA Pharma Inc. by: IBSA Institut Biochimique SA 6912 Pazzallo Switzerland Distributed by: IBSA Pharma Inc. Parsippany, NJ 07054 USA
Tirosint SOL: Information for patients
Information necessary for patients to use the drug safely and effectively, such as precautions concerning driving or the concomitant use of other substances that may have harmful additive effects.17 PATIENT COUNSELING INFORMATION Advise the patient and/or caregiver to read the FDA-approved patient labeling (Patient Information and Instructions for Use). Dosing and Administration Instruct patients to take TIROSINT-SOL only as directed by their healthcare provider. Instruct patients to take TIROSINT-SOL 15 minutes before breakfast. Instruct patients about the TIROSINT-SOL dosing instructions. Inform patients that agents such as iron and calcium supplements and antacids can decrease the absorption of levothyroxine. Instruct patients not to take TIROSINT-SOL within 4 hours of these agents. Instruct patients to notify their healthcare provider should they become pregnant or are thinking of becoming pregnant while taking TIROSINT-SOL. Important Information Inform patients that it may take several weeks before they notice an improvement in symptoms. Inform patients that the levothyroxine in TIROSINT-SOL is intended to replace a hormone that is normally produced by the thyroid gland. Generally, replacement therapy is to be taken for life. Inform patients that TIROSINT-SOL should not be used as a primary or adjunctive therapy in a weight control program. Instruct patients to notify their healthcare provider if they are taking any other medications, including prescription and over-the-counter preparations. Instruct patients to notify their healthcare provider of any other medical conditions, particularly heart disease, diabetes, clotting disorders, and adrenal or pituitary gland problems, as the dose of medications used to control these other conditions may need to be adjusted while taking TIROSINT-SOL. If they have diabetes, instruct patients to monitor their blood and/or urinary glucose levels as directed by their physician and immediately report any changes to their physician. If patients are taking anticoagulants, their clotting status should be checked frequently. Instruct patients to notify their physician or dentist that they are taking TIROSINT-SOL prior to any surgery. Adverse Reactions Instruct patients to notify their healthcare provider if they experience any of the following symptoms: rapid or irregular heartbeat, chest pain, shortness of breath, leg cramps, headache, nervousness, irritability, sleeplessness, tremors, change in appetite, weight loss, vomiting, diarrhea, excessive sweating, heat intolerance, fever, changes in menstrual periods, hives or skin rash, or any other unusual medical event. Inform patients that partial hair loss may occur rarely during the first few months of TIROSINT-SOL therapy, but this is usually temporary.
Instructions for use
Information about safe handling and use of the drug product.Instructions for Use TIROSINT ® -SOL (tee-row-sent-sōl) (levothyroxine sodium) oral solution Read this Instructions for Use before you start taking TIROSINT-SOL and each time you get a refill. There may be new information. This leaflet does not take the place of talking to your healthcare provider about your medical condition or treatment. Important Information: TIROSINT-SOL is for oral use only. Do not inhale, inject, or place TIROSINT-SOL in the eyes. TIROSINT-SOL can be taken: by diluting or mixing in water first or by directly squeezing into the mouth or onto a spoon. Do not dilute or mix TIROSINT-SOL with any liquid other than water. Open the ampule and prepare the solution right before you take TIROSINT-SOL. After you have diluted or mixed TIROSINT-SOL it must be taken or thrown away. Step 1. Using scissors, open the aluminum pouch by cutting the edge along the dotted line (See Figure A ) . Figure A Step 2. Remove 1 ampule from the strip to be used right away (See Figure B ) . Return the unused ampules back into the pouch before storing. Figure B Step 3. Hold the TIROSINT-SOL ampule upright (cap on top) between the first finger and thumb without squeezing the ampule. Open the ampule by twisting off the top (See Figure C ) . Figure C Step 4. Taking TIROSINT-SOL by diluting or mixing: Turn the ampule upside down. Squeeze the middle, softer part of the ampule between the first finger and thumb slowly to release the liquid medicine into a glass or cup containing water, then release the pressure and wait a few seconds (See Figure D ). Keeping the ampule upside down, repeat this step for a minimum of 5 times , until no more liquid medicine comes out of the ampule . Stir the solution. Drink all the liquid medicine right away . Rinse the glass or cup with more water and drink to make sure all the medicine has been taken. Figure D Taking TIROSINT-SOL directly into the mouth or by spoon: Turn the ampule upside down. Squeeze the middle, softer part of the ampule between the first finger and thumb slowly to release the liquid medicine into the mouth or onto a spoon, then release the pressure and wait a few seconds (See Figure E ). Keeping the ampule upside down, repeat this step for a minimum of 5 times , until no more liquid medicine comes out of the ampule . Figure E Step 5 . Throw away (discard) the empty ampule. How should I store TIROSINT-SOL? Store TIROSINT-SOL at room temperature between 68°F to 77°F (20°C to 25°C). Use TIROSINT-SOL within three (3) months after opening the pouch. Keep TIROSINT-SOL in the original closed pouch until you are ready to use it as important information may be lost (i.e., manufacturer/distributor names and distributor contact phone number. Do not store the diluted or mixed TIROSINT-SOL solution. Keep TIROSINT-SOL and all medicines out of the reach of children. This Instructions for Use has been approved by the U.S. Food and Drug Administration. Manufacturer: IBSA Institut Biochimique SA, 6912 Pazzallo, Switzerland Marketed and Distributed by: IBSA Pharma Inc., Parsippany, NJ 07054 USA Issued: July 2024 FI/169 (USA) 5000003397 Rev. 06 06.24 Figure A Figure B Figure C Figure D Figure E
Spl patient package insert
Information necessary for patients to use the drug safely and effectively.This Patient Information has been approved by the U.S. Food and Drug Administration Issued: 07/2024 PATIENT INFORMATION TIROSINT ® -SOL [tee-row-sent-sōl] (levothyroxine sodium) oral solution What is the most important information I should know about TIROSINT-SOL? Do not use TIROSINT-SOL to treat weight problems or weight loss. What is TIROSINT-SOL? TIROSINT-SOL is a prescription medicine that contains a hormone called levothyroxine which is normally produced by the thyroid gland. TIROSINT-SOL is used: to replace or give extra levothyroxine in people whose thyroid does not produce enough of this hormone; or with surgery and radiodine therapy to manage a type of thyroid cancer called thyroid-dependent well-differentiated thyroid cancer. TIROSINT-SOL should not be used to treat people who are recovering from swelling of the thyroid gland (thyroiditis) and whose bodies do not produce enough levothyroxine for a short time. Do not take TIROSINT-SOL: if you are allergic to glycerol the inactive ingredient in TIROSINT-SOL; or if your adrenal glands are not working well and you have not been treated for this problem. Before you take TIROSINT-SOL, tell your doctor about all of your medical conditions, including if you: have or have had heart problems have or have had thyroid nodules have adrenal or pituitary gland problems have any food or drug allergies have low red blood cell count (anemia) have diabetes have weak bones (osteoporosis) have or had a history of blood clotting problems have recently received radiation therapy with iodine (such as I-131) are pregnant or plan to become pregnant. Your doctor may need to change your TIROSINT-SOL dose while you are pregnant. are breastfeeding. TIROSINT-SOL can pass into your milk. Talk to your doctor about the best way to feed your baby if you take TIROSINT-SOL. Tell your doctor about all the medicines you are taking including prescription and over-the-counter medicines, vitamins and herbal supplements. TIROSINT-SOL may affect the way other medicines work, and other medicines may affect how TIROSINT-SOL works so your doctor may have to adjust the amount of medicines you take. You can ask your doctor or pharmacist for a list of medicines that interact with TIROSINT-SOL. How should I take TIROSINT-SOL? TIROSINT-SOL is for oral use only. Do not inhale, inject, or place TIROSINT-SOL in the eyes. See the detailed " Instructions for Use " that come with TIROSINT-SOL for information on the right way to take your dose of TIROSINT-SOL oral solution. Take TIROSINT-SOL exactly as your doctor tells you to take it. Your doctor will tell you how much TIROSINT-SOL to take each day. Your doctor may change your dose, if needed. Take your dose of TIROSINT-SOL 1 time each day 15 minutes before breakfast on an empty stomach. Certain medicines can interfere with how TIROSINT-SOL is absorbed by your body. Take TIROSINT-SOL: at least 4 hours before or after you take medicines that contain calcium carbonate or iron (ferrous sulfate); and at least 4 hours before you take medicines that contain bile acid sequestrants or ion exchange resins. Know the medicines you take. Ask your doctor or pharmacist for a list of these medicines, if you are not sure. Certain foods including soybean flour, cotton seed meal, walnuts, and dietary fiber can affect your treatment and dose of TIROSINT-SOL. Talk to your doctor if you eat or drink these foods. Do not remove TIROSINT–SOL ampules from the sealed aluminum foil pouch until you are ready to use them . Use all 5 TIROSINT-SOL ampules within three (3) months after opening the aluminum foil pouch. Your doctor should do certain blood tests while you are taking TIROSINT-SOL and may change your daily dose of TIROSINT-SOL as needed. Keep taking TIROSINT-SOL unless your doctor tells you to stop or to change your dose. It may take weeks before you notice your symptoms getting better. Keep using this medicine even if you feel well. If you take too much TIROSINT-SOL, call your doctor, your Poison Control Center at 1-800-222-1222, or go to the nearest hospital emergency room right away. What are the possible side effects of TIROSINT-SOL? TIROSINT-SOL may cause serious side effects, including: heart problems. You may experience an increased heart rate, chest pain and irregular heartbeat. Your risk of developing heart problems may be greater if you are elderly, you have heart problems, or you take too much TIROSINT-SOL. Your doctor may reduce your dose or stop treatment with TIROSINT-SOL for a while if you develop heart problems. worsening diabetic control. If you are diabetic, it may be harder to control your blood sugar levels causing hyperglycemia while taking TIROSINT-SOL. Check your blood sugar levels closely after starting, changing, or stopping treatment with TIROSINT-SOL. Your doctor may have to change your diabetes treatment plan. weak or brittle bones. Your risk of developing weak or brittle bones may be greater if you are post-menopausal or you take too much TIROSINT-SOL. The most common side effects of TIROSINT-SOL include: fast or irregular heartbeat chest pain shortness of breath leg cramps headache nervousness hives or skin rash irritability sleep problems (insomnia) tremors muscle weakness change in appetite weight loss vomiting diarrhea sweating a lot heat intolerance fever changes in menstrual period Other side effects may include partial hair loss during the first months of treatment with TIROSINT-SOL. This usually lasts a short period of time (temporary). These are not all the possible side effects of TIROSINT-SOL. Call your doctor for medical advice about side effects. You may report side effects to IBSA Pharma Inc. at 1-800-587-3513 or FDA at 1-800-FDA-1088. How should I store TIROSINT-SOL? Store TIROSINT-SOL at room temperature between 68°F to 77°F (20°C to 25°C). Use TIROSINT-SOL within three (3) months after opening the pouch. Keep TIROSINT-SOL in the original closed pouch until you are ready to use it as important information may be lost (i.e., manufacturer/distributor names and distributor contact phone number. Do not store the diluted or mixed TIROSINT-SOL solution. Keep TIROSINT-SOL and all medicines out of the reach of children. General information about the safe and effective use of TIROSINT-SOL Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use TIROSINT-SOL for a condition for which it was not prescribed. Do not give TIROSINT-SOL to other people, even if they have the same symptoms as you. It may harm them. You can ask your pharmacist or doctor for information about TIROSINT-SOL that is written for health professionals. What are the ingredients in TIROSINT- SOL oral solution? Active ingredient: levothyroxine sodium Inactive ingredients: glycerol, and water Manufactured by: IBSA Institut Biochimique SA, 6912 Pazzallo, Switzerland Marketed and distributed by: IBSA Pharma Inc, Parsippany, NJ 07054 USA For more information, go to www.tirosintsol.com or call 1-800-587-3513.
| This Patient Information has been approved by the U.S. Food and Drug Administration | Issued: 07/2024 | |||
TIROSINT-SOL is a prescription medicine that contains a hormone called levothyroxine which is normally produced by the thyroid gland. TIROSINT-SOL is used:
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| TIROSINT-SOL should not be used to treat people who are recovering from swelling of the thyroid gland (thyroiditis) and whose bodies do not produce enough levothyroxine for a short time. | ||||
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| Tell your doctor about all the medicines you are taking including prescription and over-the-counter medicines, vitamins and herbal supplements. TIROSINT-SOL may affect the way other medicines work, and other medicines may affect how TIROSINT-SOL works so your doctor may have to adjust the amount of medicines you take. You can ask your doctor or pharmacist for a list of medicines that interact with TIROSINT-SOL. | ||||
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| Other side effects may include partial hair loss during the first months of treatment with TIROSINT-SOL. This usually lasts a short period of time (temporary). | ||||
| These are not all the possible side effects of TIROSINT-SOL. Call your doctor for medical advice about side effects. You may report side effects to IBSA Pharma Inc. at 1-800-587-3513 or FDA at 1-800-FDA-1088. | ||||
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| Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use TIROSINT-SOL for a condition for which it was not prescribed. Do not give TIROSINT-SOL to other people, even if they have the same symptoms as you. It may harm them. You can ask your pharmacist or doctor for information about TIROSINT-SOL that is written for health professionals. | ||||
Geriatric use
Information about any limitations on any geriatric indications, needs for specific monitoring, hazards associated with use of the drug in the geriatric population.8.5 Geriatric Use Because of the increased prevalence of cardiovascular disease among the elderly, initiate TIROSINT-SOL at less than the full replacement dose [ see Dosage and Administration (2.3) and Warnings and Precautions (5.1) ]. Atrial arrhythmias can occur in elderly patients. Atrial fibrillation is the most common of the arrhythmias observed with levothyroxine overtreatment in the elderly .
Pediatric use
Information about any limitations on any pediatric indications, needs for specific monitoring, hazards associated with use of the drug in any subsets of the pediatric population (such as neonates, infants, children, or adolescents), differences between pediatric and adult responses to the drug, and other information related to the safe and effective pediatric use of the drug.8.4 Pediatric Use TIROSINT-SOL is indicated in patients from birth to less than 17 years of age: As a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism As an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer Rapid restoration of normal serum T4 concentrations is essential for preventing the adverse effects of congenital hypothyroidism on cognitive development as well as on overall physical growth and maturation. Therefore, initiate TIROSINT-SOL therapy immediately upon diagnosis. Levothyroxine is generally continued for life in these patients [see Warnings and Precautions (5.1) ]. Closely monitor infants during the first two weeks of TIROSINT-SOL therapy for cardiac overload and arrhythmias.
Pregnancy
Information about effects the drug may have on pregnant women or on a fetus. This field may be ommitted if the drug is not absorbed systemically and the drug is not known to have a potential for indirect harm to the fetus. It may contain information about the established pregnancy category classification for the drug. (That information is nominally listed in the teratogenic_effects field, but may be listed here instead.)8.1 Pregnancy Risk Summary The clinical experience, including data from published postmarketing studies, in pregnant women treated with oral levothyroxine to maintain euthyroid state have not reported increased rates of major birth defects, miscarriages, or other adverse maternal or fetal outcomes. There are risks to the mother and fetus associated with untreated hypothyroidism in pregnancy. Since TSH levels may increase during pregnancy, TSH should be monitored and TIROSINT‑SOL dosage adjusted during pregnancy [see Clinical Considerations ] . Animal reproductive studies have not been conducted with levothyroxine sodium. TIROSINT-SOL should not be discontinued during pregnancy and hypothyroidism diagnosed during pregnancy should be promptly treated. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Maternal hypothyroidism during pregnancy is associated with a higher rate of complications, including spontaneous abortion, gestational hypertension, pre-eclampsia, stillbirth, and premature delivery. Untreated maternal hypothyroidism may have an adverse effect on fetal neurocognitive development. Dose Adjustments During Pregnancy and the Postpartum Period Pregnancy may increase TIROSINT-SOL requirements. Serum TSH levels should be monitored and the TIROSINT-SOL dosage adjusted during pregnancy. Since postpartum TSH levels are similar to preconception values, the TIROSINT-SOL dosage should return to the pre-pregnancy dose immediately after delivery [see Dosage and Administration (2.3) ].
Use in specific populations
Information about use of the drug by patients in specific populations, including pregnant women and nursing mothers, pediatric patients, and geriatric patients.8 USE IN SPECIFIC POPULATIONS Pregnancy may require the use of higher doses of TIROSINT-SOL ( 2.3 , 8.1 ) See 17 for PATIENT COUNSELING INFORMATION and FDA‑approved patient labeling. 8.1 Pregnancy Risk Summary The clinical experience, including data from published postmarketing studies, in pregnant women treated with oral levothyroxine to maintain euthyroid state have not reported increased rates of major birth defects, miscarriages, or other adverse maternal or fetal outcomes. There are risks to the mother and fetus associated with untreated hypothyroidism in pregnancy. Since TSH levels may increase during pregnancy, TSH should be monitored and TIROSINT‑SOL dosage adjusted during pregnancy [see Clinical Considerations ] . Animal reproductive studies have not been conducted with levothyroxine sodium. TIROSINT-SOL should not be discontinued during pregnancy and hypothyroidism diagnosed during pregnancy should be promptly treated. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Maternal hypothyroidism during pregnancy is associated with a higher rate of complications, including spontaneous abortion, gestational hypertension, pre-eclampsia, stillbirth, and premature delivery. Untreated maternal hypothyroidism may have an adverse effect on fetal neurocognitive development. Dose Adjustments During Pregnancy and the Postpartum Period Pregnancy may increase TIROSINT-SOL requirements. Serum TSH levels should be monitored and the TIROSINT-SOL dosage adjusted during pregnancy. Since postpartum TSH levels are similar to preconception values, the TIROSINT-SOL dosage should return to the pre-pregnancy dose immediately after delivery [see Dosage and Administration (2.3) ]. 8.2 Lactation Risk Summary Published studies report that levothyroxine is present in human milk following the administration of oral levothyroxine. No adverse effects on the breastfed infant have been reported and this no information on the effects of levothyroxine on milk production. Adequate levothyroxine treatment during lactation may normalize milk production in hypothyroid lactating mothers with low milk supply. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for TIROSINT-SOL and any potential adverse effects on the breastfed infant from TIROSINT-SOL or from the underlying maternal condition. 8.4 Pediatric Use TIROSINT-SOL is indicated in patients from birth to less than 17 years of age: As a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism As an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer Rapid restoration of normal serum T4 concentrations is essential for preventing the adverse effects of congenital hypothyroidism on cognitive development as well as on overall physical growth and maturation. Therefore, initiate TIROSINT-SOL therapy immediately upon diagnosis. Levothyroxine is generally continued for life in these patients [see Warnings and Precautions (5.1) ]. Closely monitor infants during the first two weeks of TIROSINT-SOL therapy for cardiac overload and arrhythmias. 8.5 Geriatric Use Because of the increased prevalence of cardiovascular disease among the elderly, initiate TIROSINT-SOL at less than the full replacement dose [ see Dosage and Administration (2.3) and Warnings and Precautions (5.1) ]. Atrial arrhythmias can occur in elderly patients. Atrial fibrillation is the most common of the arrhythmias observed with levothyroxine overtreatment in the elderly .
How supplied
Information about the available dosage forms to which the labeling applies, and for which the manufacturer or distributor is responsible. This field ordinarily includes the strength of the dosage form (in metric units), the units in which the dosage form is available for prescribing, appropriate information to facilitate identification of the dosage forms (such as shape, color, coating, scoring, and National Drug Code), and special handling and storage condition information.16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied TIROSINT-SOL (levothyroxine sodium) oral solution is a clear, colorless to slightly yellow solution supplied in a 1 mL white, non-transparent, unit-dose ampule. The dosage strength is identified on the box and the pouch, and is associated with a distinct color. Each ampule bears a colored label with the dosage strength and the product name (TIROSINT-SOL) (Table 10). Table 10. TIROSINT-SOL Solution Strengths and Packaging Description Strength (mcg/mL) Color a Box NDC (30 Unit-Dose Ampules) Pouch NDC (5 Unit-Dose Ampules) 13 Green 71858-0105-5 71858-0105-4 25 Orange 71858-0110-5 71858-0110-4 37.5 Dark Blue 71858-0112-5 71858-0112-4 44 Red 71858-0113-5 71858-0113-4 50 White 71858-0115-5 71858-0115-4 62.5 Grey 71858-0117-5 71858-0117-4 75 Purple 71858-0120-5 71858-0120-4 88 Olive 71858-0125-5 71858-0125-4 100 Yellow 71858-0130-5 71858-0130-4 112 Rose 71858-0135-5 71858-0135-4 125 Brown 71858-0140-5 71858-0140-4 137 Turquoise 71858-0145-5 71858-0145-4 150 Blue 71858-0150-5 71858-0150-4 175 Lilac 71858-0155-5 71858-0155-4 200 Pink 71858-0160-5 71858-0160-4 Storage and Handling Store TIROSINT-SOL in the original container (closed pouch) at 20°C to 25°C (68°F to 77°F); excursions permitted to 15° to 30°C (59°F to 86°F) [See USP Controlled Room Temperature]. Use TIROSINT-SOL oral solution within three (3) months after opening the pouch. Keep the ampules in the pouch until ready to use as important information may be lost (i.e., manufacturer/distributor names and distributor contact phone number).
| Strength (mcg/mL) | Color a | Box NDC (30 Unit-Dose Ampules) | Pouch NDC (5 Unit-Dose Ampules) |
|---|---|---|---|
| 13 | Green | 71858-0105-5 | 71858-0105-4 |
| 25 | Orange | 71858-0110-5 | 71858-0110-4 |
| 37.5 | Dark Blue | 71858-0112-5 | 71858-0112-4 |
| 44 | Red | 71858-0113-5 | 71858-0113-4 |
| 50 | White | 71858-0115-5 | 71858-0115-4 |
| 62.5 | Grey | 71858-0117-5 | 71858-0117-4 |
| 75 | Purple | 71858-0120-5 | 71858-0120-4 |
| 88 | Olive | 71858-0125-5 | 71858-0125-4 |
| 100 | Yellow | 71858-0130-5 | 71858-0130-4 |
| 112 | Rose | 71858-0135-5 | 71858-0135-4 |
| 125 | Brown | 71858-0140-5 | 71858-0140-4 |
| 137 | Turquoise | 71858-0145-5 | 71858-0145-4 |
| 150 | Blue | 71858-0150-5 | 71858-0150-4 |
| 175 | Lilac | 71858-0155-5 | 71858-0155-4 |
| 200 | Pink | 71858-0160-5 | 71858-0160-4 |
Storage and handling
Information about safe storage and handling of the drug product.How Supplied TIROSINT-SOL (levothyroxine sodium) oral solution is a clear, colorless to slightly yellow solution supplied in a 1 mL white, non-transparent, unit-dose ampule. The dosage strength is identified on the box and the pouch, and is associated with a distinct color. Each ampule bears a colored label with the dosage strength and the product name (TIROSINT-SOL) (Table 10). Table 10. TIROSINT-SOL Solution Strengths and Packaging Description Strength (mcg/mL) Color a Box NDC (30 Unit-Dose Ampules) Pouch NDC (5 Unit-Dose Ampules) 13 Green 71858-0105-5 71858-0105-4 25 Orange 71858-0110-5 71858-0110-4 37.5 Dark Blue 71858-0112-5 71858-0112-4 44 Red 71858-0113-5 71858-0113-4 50 White 71858-0115-5 71858-0115-4 62.5 Grey 71858-0117-5 71858-0117-4 75 Purple 71858-0120-5 71858-0120-4 88 Olive 71858-0125-5 71858-0125-4 100 Yellow 71858-0130-5 71858-0130-4 112 Rose 71858-0135-5 71858-0135-4 125 Brown 71858-0140-5 71858-0140-4 137 Turquoise 71858-0145-5 71858-0145-4 150 Blue 71858-0150-5 71858-0150-4 175 Lilac 71858-0155-5 71858-0155-4 200 Pink 71858-0160-5 71858-0160-4
| Strength (mcg/mL) | Color a | Box NDC (30 Unit-Dose Ampules) | Pouch NDC (5 Unit-Dose Ampules) |
|---|---|---|---|
| 13 | Green | 71858-0105-5 | 71858-0105-4 |
| 25 | Orange | 71858-0110-5 | 71858-0110-4 |
| 37.5 | Dark Blue | 71858-0112-5 | 71858-0112-4 |
| 44 | Red | 71858-0113-5 | 71858-0113-4 |
| 50 | White | 71858-0115-5 | 71858-0115-4 |
| 62.5 | Grey | 71858-0117-5 | 71858-0117-4 |
| 75 | Purple | 71858-0120-5 | 71858-0120-4 |
| 88 | Olive | 71858-0125-5 | 71858-0125-4 |
| 100 | Yellow | 71858-0130-5 | 71858-0130-4 |
| 112 | Rose | 71858-0135-5 | 71858-0135-4 |
| 125 | Brown | 71858-0140-5 | 71858-0140-4 |
| 137 | Turquoise | 71858-0145-5 | 71858-0145-4 |
| 150 | Blue | 71858-0150-5 | 71858-0150-4 |
| 175 | Lilac | 71858-0155-5 | 71858-0155-4 |
| 200 | Pink | 71858-0160-5 | 71858-0160-4 |
Boxed warning
Information about contraindications or serious warnings, particularly those that may lead to death or serious injury.WARNING: NOT FOR TREATMENT OF OBESITY OR FOR WEIGHT LOSS Thyroid hormones, including TIROSINT-SOL, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Larger doses may produce serious or even life threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects [see Adverse Reactions (6) , Drug Interactions (7.7) , and Overdosage (10) ]. WARNING: NOT FOR TREATMENT OF OBESITY OR FOR WEIGHT LOSS See full prescribing information for complete boxed warning Thyroid hormones, including TIROSINT-SOL, should not be used for the treatment of obesity or for weight loss. Doses beyond the range of daily hormonal requirements may produce serious or even life threatening manifestations of toxicity ( 6 , 10 ).
Disclaimer: Do not rely on openFDA or Phanrmacy Near Me to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. Source: OpenFDA, Healthporta Drugs API