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| Product NDC Code | 71205-851 | ||||||||||||||||||||
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| Drug Name | Phenobarbital |
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| Type | Generic | ||||||||||||||||||||
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| Route | ORAL | ||||||||||||||||||||
| Dosage Form | TABLET | ||||||||||||||||||||
| RxCUI drug identifier | 198083, 198089, 312357 |
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| Labeler Name | Proficient Rx LP | ||||||||||||||||||||
| Packages |
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Drug abuse and dependence
Information about whether the drug is a controlled substance, the types of abuse that can occur with the drug, and adverse reactions pertinent to those types of abuse.DRUG ABUSE AND DEPENDENCE Controlled Substance - Phenobarbital is a Schedule IV drug. Dependence: Prolonged, uninterrupted use of barbiturates (particularly the short-acting drugs), even in therapeutic doses, may result in psychic and physical dependence. Withdrawal symptoms due to physical dependence following chronic use of large doses of barbiturates may include delirium, convulsions, and death.
Overdosage of Phenobarbital
Information about signs, symptoms, and laboratory findings of acute ovedosage and the general principles of overdose treatment.OVERDOSAGE The signs and symptoms of barbiturate poisoning are referable especially to the central nervous system and the cardiovascular system. Moderate intoxication resembles alcoholic inebriation. In severe intoxication, the patient is comatose, the level of reflex activity conforming in a general way to the intensity of the central depression. The deep reflexes may persist for some time despite coexistent coma. The Babinski sign is often positive. The EEG may be of the “burst-suppression” type, with brief periods of electrical silence. The pupils may be constricted and react to light, but late in the course of barbiturate poisoning they may show hypoxic paralytic dilatation. Respiration is affected early. Breathing may be either slow or rapid and shallow; Cheyne-Stokes rhythm may be present. Respiratory minute volume is diminished, and hypoxia and respiratory acidosis may develop. The blood pressure falls, owing partly to depression of medullary vasomotor centers; partly to a direct action of the drug on the myocardium, sympathetic ganglia, and vascular smooth muscle; partly to hypoxia. The patient thus develops a typical shock syndrome, with a weak and rapid pulse, cold and clammy skin, and a rise in the hematocrit. Respiratory complications (atelectasis, pulmonary edema, and bronchopneumonia) and renal failure are much dreaded and not infrequent concomitant of severe barbiturate poisoning. There is usually hypothermia, sometimes with temperatures as low as 32°C. Treatment: General management should consist of symptomatic and supportive therapy, including gastric lavage, administration of intravenous fluids, and maintenance of blood pressure, body temperature and adequate respiratory exchange. Dialysis will increase the rate of removal of barbiturates from the body fluids. Antibiotics may be required to control pulmonary complications.
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.ADVERSE REACTIONS The following adverse reactions have been reported: CNS Depression: Residual sedation or “hangover”, drowsiness, lethargy, and vertigo. Emotional disturbances and phobias may be accentuated. In some persons, barbiturates such as phenobarbital repeatedly produce excitement rather than depression, and the patient may appear to be inebriated. Like other non-analgesic hypnotic drugs, barbiturates, such as phenobarbital, when given in the presence of pain, may cause restlessness, excitement, and even delirium. Rarely, the use of barbiturates results in localized or diffused myalgic, neuralgic, or arthritic pain, especially in psychoneurotic patients with insomnia. The pain may appear in paroxysms, is most intense in the early morning hours, and is most frequently located in the region of the neck, shoulder girdle, and upper limbs. Symptoms may last for days after the drug is discontinued. Respiratory/Circulatory: Respiratory depression, apnea, circulatory collapse. Allergic: Acquired hypersensitivity to barbiturates consists chiefly in allergic reactions that occur especially in persons who tend to have asthma, urticaria, angioedema, and similar conditions. Hypersensitivity reactions in this category include localized swelling, particularly of the eyelids, cheeks, or lips, and erythematous dermatitis. Rarely, exfoliative dermatitis (e.g., Stevens-Johnson syndrome and toxic epidermal necrolysis) may be caused by phenobarbital and can prove fatal. The skin eruption may be associated with fever, delirium, and marked degenerative changes in the liver and other parenchymatous organs. In a few cases, megaloblastic anemia has been associated with the chronic use of phenobarbital. Other: Nausea and vomiting; headache. To report SUSPECTED ADVERSE REACTIONS, contact Rising Pharma Holdings, Inc. at 1-844-874-7464, or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Phenobarbital 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.Drug Interactions: Phenobarbital in combination with alcohol, tranquilizers, and other central nervous system depressants has additive depressant effects, and the patient should be so advised. Patients taking this drug should be warned not to exceed the dosage recommended by their physician. Toxic effects and fatalities have occurred following overdoses of phenobarbital alone and in combination with other central nervous system depressants. Caution should be exercised in prescribing unnecessarily large amounts of phenobarbital for patients who have a history of emotional disturbances or suicidal ideation or who have misused alcohol and other CNS drugs (see OVERDOSAGE ).
Clinical pharmacology
Information about the clinical pharmacology and actions of the drug in humans.CLINICAL PHARMACOLOGY Phenobarbital, a long-acting barbiturate, is a central nervous system depressant. In ordinary doses, the drug acts as a sedative and anticonvulsant. Its onset of action occurs within 30 minutes, and the duration of action ranges from 5 to 6 hours. It is detoxified in the liver.
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.CONTRAINDICATIONS Phenobarbital is contraindicated in patients who are hypersensitive to barbiturates. In such patients, severe hepatic damage can occur from ordinary doses and is usually associated with dermatitis and involvement of parenchymatous organs. A personal or familial history of acute intermittent porphyria represents one of the few absolute contraindications to the use of barbiturates. Phenobarbital is also contraindicated in patients with marked impairment of liver function, or respiratory disease in which dyspnea or obstruction is evident. It should not be administered to persons with known previous addiction to the sedative/hypnotic group, since ordinary doses may be ineffectual and may contribute to further addiction.
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.DESCRIPTION Phenobarbital is a barbituric acid derivative for oral administration and occurs as a white, odorless, slightly bitter powder that is soluble in chloroform, freely soluble in alcohol or ether, and slightly soluble in water. Its saturated solution has a pH of about 5.6. Chemically, it is 5-ethyl-5- phenylbarbituric acid with the molecular formula C 12 H 12 N 2 O 3 (232.24). The structural formula is as follows: Each Phenobarbital Tablet, USP contains 15 mg, 60 mg or 100 mg of phenobarbital, USP. Inactive ingredients include: colloidal silicon dioxide, lactose monohydrate, microcrystalline cellulose, sodium starch glycolate and magnesium stearate. 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.DOSAGE AND ADMINISTRATION Oral Sedative Dose, Adults - 30 to 120 mg daily in 2 or 3 divided doses. Children - 6 mg/kg of body weight daily in 3 divided doses. Oral Hypnotic Dose, Adults - 100 to 320 mg. Oral Anticonvulsant Dose, Adults - 50 to 100 mg 2 or 3 times daily. Children - 15 to 50 mg 2 or 3 times daily.
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.INDICATIONS AND USAGE Phenobarbital Tablets, USP are indicated for use as a sedative or anticonvulsant.
Spl product data elements
Usually a list of ingredients in a drug product.Phenobarbital Phenobarbital PHENOBARBITAL PHENOBARBITAL SILICON DIOXIDE LACTOSE MONOHYDRATE MICROCRYSTALLINE CELLULOSE SODIUM STARCH GLYCOLATE TYPE A MAGNESIUM STEARATE White to off-white Round, Biconvex T;35 Phenobarbital Phenobarbital PHENOBARBITAL PHENOBARBITAL SILICON DIOXIDE LACTOSE MONOHYDRATE MICROCRYSTALLINE CELLULOSE SODIUM STARCH GLYCOLATE TYPE A MAGNESIUM STEARATE White to off-white Round, Biconvex T;37 Phenobarbital Phenobarbital PHENOBARBITAL PHENOBARBITAL SILICON DIOXIDE LACTOSE MONOHYDRATE MICROCRYSTALLINE CELLULOSE SODIUM STARCH GLYCOLATE TYPE A MAGNESIUM STEARATE White to off-white Round, Biconvex T;38
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.PACKAGE LABEL.PRINCIPAL DISPLAY PANEL NDC 71205-845-30 Phenobarbital* Tablets, USP CIV 15 mg *WARNING: May be habit forming. 30 Tablets Rx Only NDC 71205-848-30 Phenobarbital* Tablets, USP CIV 60 mg *WARNING: May be habit forming. 30 Tablets Rx Only NDC 71205-851-30 Phenobarbital* Tablets, USP CIV 100 mg *WARNING: May be habit forming. 30 Tablets Rx Only 71205-845-30 71205-848-30 71205-851-30
Phenobarbital: 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.Information for Patients: Phenobarbital may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks, such as driving a car or operating machinery. The patient should be cautioned accordingly.
Nursing mothers
Information about excretion of the drug in human milk and effects on the nursing infant, including pertinent adverse effects observed in animal offspring.Nursing Mothers: Caution should be exercised when phenobarbital is administered to a nursing woman.
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.)Usage in Pregnancy: Pregnancy Category B - Reproduction studies have been performed in animals and have revealed no evidence of impaired fertility or harm to the fetus due to phenobarbital. There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.
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.HOW SUPPLIED Phenobarbital Tablets, USP 15 mg: White to off-white round, biconvex tablets debossed “T35” on one side and plain on the other side. Available in bottles of 30 tablets, NDC 71205-845-30; 60 tablets, NDC 71205-845-60; 90 tablets, NDC 71205-845-90; 100 tablets, NDC 71205-845-00; 120 tablets, NDC 71205-845-72; 180 tablets, NDC 71205-845-78; 240 tablets, NDC 71205-845-64; 500 tablets, NDC 71205-845-55; and 1000 tablets, NDC 71205-845-11. Phenobarbital Tablets, USP 60 mg: White to off-white round, biconvex tablets debossed “T” above and “37” below the bisect on one side and plain on the other side. Available in bottles of 30 tablets, NDC 71205-848-30; 60 tablets, NDC 71205-848-60; 90 tablets, NDC 71205-848-90; 100 tablets, NDC 71205-848-00; 120 tablets, NDC 71205-848-72; 180 tablets, NDC 71205-848-78; 240 tablets, NDC 71205-848-64; 500 tablets, NDC 71205-848-55; and 1000 tablets, NDC 71205-848-11. Phenobarbital Tablets, USP 100 mg: White to off-white round, biconvex tablets debossed “T” above and “38” below the bisect on one side and plain on the other side. Available in bottles of 30 tablets, NDC 71205-851-30; 60 tablets, NDC 71205-851-60; 90 tablets, NDC 71205-851-90; 100 tablets, NDC 71205-851-00; 120 tablets, NDC 71205-851-72; 180 tablets, NDC 71205-851-78; 240 tablets, NDC 71205-851-64; 500 tablets, NDC 71205-851-55; and 1000 tablets, NDC 71205-851-11. Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Protect from light and moisture. Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure. Distributed by: Rising Pharma Holdings, Inc. East Brunswick, NJ 08816 Manufactured by: Quagen Pharmaceuticals LLC West Caldwell, NJ 07006 Repackaged and Relabeled by: Proficient Rx LP Thousand Oaks, CA 91320 52024 Rev. 07/20
General precautions
Information about any special care to be exercised for safe and effective use of the drug.General Precautions: Barbiturates induce liver microsomal enzyme activity. This accelerates the biotransformation of various drugs and is probably part of the mechanism of the tolerance encountered with barbiturates. Phenobarbital, therefore, should be used with caution in patients with decreased liver function. This drug should also be administered cautiously to patients with a history of drug dependence or abuse (see DRUG ABUSE AND DEPENDENCE ). Phenobarbital may decrease the potency of coumarin anticoagulants; therefore, patients receiving such concomitant therapy should have more frequent prothrombin determinations. As with other sedatives and hypnotics, elderly or debilitated patients may react to barbiturates with marked excitement, depression, or confusion. The systemic effects of exogenous hydrocortisone and endogenous hydrocortisone (cortisol) may be diminished by phenobarbital. Thus, this product should be administered with caution to patients with borderline hypoadrenal function, regardless of whether it is of pituitary or of primary adrenal origin.
Precautions
Information about any special care to be exercised for safe and effective use of the drug.PRECAUTIONS General Precautions: Barbiturates induce liver microsomal enzyme activity. This accelerates the biotransformation of various drugs and is probably part of the mechanism of the tolerance encountered with barbiturates. Phenobarbital, therefore, should be used with caution in patients with decreased liver function. This drug should also be administered cautiously to patients with a history of drug dependence or abuse (see DRUG ABUSE AND DEPENDENCE ). Phenobarbital may decrease the potency of coumarin anticoagulants; therefore, patients receiving such concomitant therapy should have more frequent prothrombin determinations. As with other sedatives and hypnotics, elderly or debilitated patients may react to barbiturates with marked excitement, depression, or confusion. The systemic effects of exogenous hydrocortisone and endogenous hydrocortisone (cortisol) may be diminished by phenobarbital. Thus, this product should be administered with caution to patients with borderline hypoadrenal function, regardless of whether it is of pituitary or of primary adrenal origin. Information for Patients: Phenobarbital may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks, such as driving a car or operating machinery. The patient should be cautioned accordingly. Drug Interactions: Phenobarbital in combination with alcohol, tranquilizers, and other central nervous system depressants has additive depressant effects, and the patient should be so advised. Patients taking this drug should be warned not to exceed the dosage recommended by their physician. Toxic effects and fatalities have occurred following overdoses of phenobarbital alone and in combination with other central nervous system depressants. Caution should be exercised in prescribing unnecessarily large amounts of phenobarbital for patients who have a history of emotional disturbances or suicidal ideation or who have misused alcohol and other CNS drugs (see OVERDOSAGE ). Usage in Pregnancy: Pregnancy Category B - Reproduction studies have been performed in animals and have revealed no evidence of impaired fertility or harm to the fetus due to phenobarbital. There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. Nursing Mothers: Caution should be exercised when phenobarbital is administered to a nursing woman.
Warnings
Information about serious adverse reactions and potential safety hazards, including limitations in use imposed by those hazards and steps that should be taken if they occur.WARNINGS In small doses, the barbiturates may increase the reaction to painful stimuli. Taken by themselves, the barbiturates cannot be relied upon to relieve pain or even to produce sedation or sleep in the presence of severe pain.
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