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| Product NDC Code | 42794-014 | ||||
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| Drug Name | Ultramicrosize griseofulvin |
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| Type | Generic | ||||
| Pharm Class | Decreased Mitosis [PE], Microtubule Inhibition [PE], Tubulin Inhibiting Agent [EPC] |
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| Route | ORAL | ||||
| Dosage Form | TABLET | ||||
| RxCUI drug identifier | 239239, 242831 |
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| Application Number | ANDA202545 | ||||
| Labeler Name | Sigmapharm Laboratories, LLC | ||||
| Packages |
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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 There have been post-marketing reports of severe skin and hepatic adverse events associated with griseofulvin use (see WARNINGS section). When adverse reactions occur, they are most commonly of the hypersensitivity type such as skin rashes, urticaria, erythema multiforme-like drug reactions, and rarely, angioneurotic edema, and may necessitate withdrawal of therapy and appropriate countermeasures. Paresthesia of the hands and feet have been reported after extended therapy. Other side effects reported occasionally are oral thrush, nausea, vomiting, epigastric distress, diarrhea, headache, fatigue, dizziness, insomnia, mental confusion, and impairment of performance of routine activities. Proteinuria and leukopenia have been reported rarely. Administration of the drug should be discontinued if granulocytopenia occurs. When rare, serious reactions occur with griseofulvin, they are usually associated with high dosages, long periods of therapy, or both. To report SUSPECTED ADVERSE REACTIONS, contact Sigmapharm Laboratories, LLC, Pharmacovigilance at 1-855-332-0731 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Clinical pharmacology
Information about the clinical pharmacology and actions of the drug in humans.CLINICAL PHARMACOLOGY Microbiology - Griseofulvin is fungistatic with in vitro activity against various species of Microsporum, Epidermophyton and Trichophyton. It has no effect on bacteria or other genera of fungi. Susceptibilitv Testing For specific information regarding susceptibility test interpretive criteria and associated test methods and quality control standards recognized by FDA for this drug, please see: https://www.fda.gov/STIC. Pharmacokinetics - Following oral administration, griseofulvin is deposited in the keratin precursor cells and has a greater affinity for diseased tissue. The drug is tightly bound to the new keratin which becomes highly resistant to fungal invasions. The efficiency of gastrointestinal absorption of ultramicrocrystalline griseofulvin is approximately one and one-half times that of the conventional microsize griseofulvin. This factor permits the oral intake of two-thirds as much ultramicrocrystalline griseofulvin as the microsize form. However, there is currently no evidence that this lower dose confers any significant clinical differences with regard to safety and/or efficacy. In a bioequivalence study conducted in healthy volunteers (N=24) in the fasted state, 250 mg ultramicrocrystalline griseofulvin tablets were compared with 250 mg ultramicrocrystalline griseofulvin tablets that were physically altered (crushed) and administered with applesauce. The 250 mg ultramicrocrystalline griseofulvin tablets were found to be bioequivalent to the physically altered (crushed) 250 mg ultramicrocrystalline griseofulvin tablets (See Table 1 ). Table 1: Mean ( ± SD) of the Pharmacokinetic Parameters for Griseofulvin administered in applesauce as a Single Dose of Ultramicrosize Griseofulvin Tablets, USP 250 mg Uncrushed and Crushed to fasted Healthy Volunteers (N=24) 250 mg Ultramicrocrystalline Griseofulvin Tablets Unaltered 250 mg Ultramicrocrystalline Griseofulvin Tablets Physically Altered (Crushed and in Applesauce) C max (ng/mL) 600.61 (± 167.6) 672.61 (± 146.2) T max (hr) 4.04 (± 2.2) 3.08 (± 1.02) AUC (ng.hr/mL) 8618.89 (± 1907.2) 9023.71 (± 1911.5)
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.CONTRAINDICATIONS Two cases of conjoined twins have been reported since 1977 in patients taking griseofulvin during the first trimester of pregnancy. Griseofulvin should not be prescribed to pregnant patients. If the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus. This drug is contraindicated in patients with porphyria or hepatocellular failure and in individuals with a history of hypersensitivity to griseofulvin.
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 Ultramicrosize Griseofulvin Tablets, USP contain ultramicrosize crystals of griseofulvin, an antibiotic derived from a species of Penicillium . The chemical name of griseofulvin, USP is 7-Chloro-2’,4’6-trimethoxy-6’β-methylspiro[benzofuran-2(3H),1’-[2]cyclohexene]-3,4’-dione. Its structural formula is: C 17 H 17 ClO 6 M.W. 352.77 Griseofulvin, USP occurs as a white to creamy white, odorless powder which is very slightly soluble in water, soluble in acetone, dimethylformamide, and chloroform and sparingly soluble in alcohol. Each ultramicrosize griseofulvin tablet contains ultramicrosize griseofulvin 125 mg or 250 mg and the following inactive ingredients: lactose monohydrate, corn starch, microcrystalline cellulose, povidone, polyethylene glycol 400, poloxamer 188, anhydrous lactose, silicon dioxide, crospovidone 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 Accurate diagnosis of infecting organism is essential. Identification should be made either by direct microscopic examination of a mounting of infected tissue in a solution of potassium hydroxide or by culture on an appropriate medium. Medication must be continued until the infecting organism is completely eradicated as indicated by appropriate clinical or laboratory examination. Representative treatment periods are tinea capitis, 4 to 6 weeks; tinea corporis, 2 to 4 weeks; tinea pedis, 4 to 8 weeks; tinea unguium-depending on rate of growth-fingernails, at least 4 months; toenails, at least 6 months. General measures in regard to hygiene should be observed to control sources of infection or reinfection. Concomitant use of appropriate topical agents is usually required, particularly in treatment of tinea pedis. In some forms of athlete's foot, yeasts and bacteria may be involved as well as fungi. Griseofulvin will not eradicate the bacterial or monilial infection. Ultramicrosize Griseofulvin Tablets, USP may be swallowed whole or crushed and sprinkled onto 1 tablespoonful of applesauce and swallowed immediately without chewing. Adults: Daily administration of 375 mg (as a single dose or in divided doses) will give a satisfactory response in most patients with tinea corporis, tinea cruris, and tinea capitis. For those fungal infections more difficult to eradicate, such as tinea pedis and tinea unguium, a divided dose of 750 mg is recommended. Pediatric Use: Approximately 7.3 mg per kg of body weight per day of ultramicrosize griseofulvin is an effective dose for most pediatric patients. On this basis, the following dosage schedule is suggested: 16-27 kg: 125 mg to 187.5 mg daily. over 27 kg: 187.5 mg to 375 mg daily Children and infants 2 years of age and younger - dosage has not been established. Clinical experience with griseofulvin in children with tinea capitis indicates that a single daily dose is effective. Clinical relapse will occur if the medication is not continued until the infecting organism is eradicated.
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 Ultramicrosize Griseofulvin Tablets, USP are indicated for the treatment of the following ringworm infections; tinea corporis (ringworm of the body), tinea pedis (athlete's foot), tinea cruris (ringworm of the groin and thigh), tinea barbae (barber's itch), tinea capitis (ringworm of the scalp), and tinea unguium (onychomycosis, ringworm of the nails), when caused by one or more of the following genera of fungi: Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Trichophyton interdigitalis, Trichophyton verrucosum, Trichophyton megnini, Trichophyton gallinae, Trichophyton crateriform, Trichophyton sulphureum, Trichophyton schoenleini, Microsporum audouini, Microsporum canis, Microsporum gypseum and Epidermophyton floccosum . NOTE: Prior to therapy, the type of fungi responsible for the infection should be identified. The use of the drug is not justified in minor or trivial infections which will respond to topical agents alone. Griseofulvin is not effective in the following: bacterial infections, candidiasis (moniliasis), histoplasmosis, actinomycosis, sporotrichosis, chromoblastomycosis, coccidioidomycosis, North American blastomycosis, cryptococcosis (torulosis), tinea versicolor and nocardiosis.
Spl product data elements
Usually a list of ingredients in a drug product.Ultramicrosize Griseofulvin Ultramicrosize Griseofulvin LACTOSE MONOHYDRATE STARCH, CORN CELLULOSE, MICROCRYSTALLINE POVIDONE POLYETHYLENE GLYCOL 400 POLOXAMER 188 ANHYDROUS LACTOSE SILICON DIOXIDE CROSPOVIDONE MAGNESIUM STEARATE GRISEOFULVIN GRISEOFULVIN white to off-white round, standard concave, bisected tablets ;13 Ultramicrosize Griseofulvin Ultramicrosize Griseofulvin LACTOSE MONOHYDRATE STARCH, CORN CELLULOSE, MICROCRYSTALLINE POVIDONE POLYETHYLENE GLYCOL 400 POLOXAMER 188 ANHYDROUS LACTOSE SILICON DIOXIDE CROSPOVIDONE MAGNESIUM STEARATE GRISEOFULVIN GRISEOFULVIN white to off-white round, standard concave, bisected tablets ;14
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.ULTRAMICROSIZE GRISEOFULVIN TABLETS, USP 125 MG - 30 TABLET CONTAINER LABEL Ultramicrosize Griseofulvin Tablets, USP 125 mg Container Label Sigmapharm Laboratories, LLC NDC 42794- 013 -08 Ultramicrosize Griseofulvin Tablets, USP 125 mg 30 Tablets Rx Only 125 mg Container label-30 fill
ULTRAMICROSIZE GRISEOFULVIN TABLETS, USP 250 MG - 30 TABLET CONTAINER LABEL Ultramicrosize Griseofulvin Tablets, USP 250 mg Container Label Sigmapharm Laboratories, LLC NDC 42794- 014 -08 Ultramicrosize Griseofulvin Tablets, USP 250 mg 30 Tablets Rx Only image description
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 Ultramicrosize Griseofulvin Tablets, USP 125 mg are white to off-white, round, standard concave, bisected tablets, debossed 'Σ' and '13' on either side of the bisection and plain on the other side. The 125 mg strength is available in bottles of 30’s (NDC 42794-013-08). Ultramicrosize Griseofulvin Tablets, USP 250 mg are white to off-white, round, standard concave, bisected tablets, debossed 'Σ' and '14' on either side of the bisection and plain on the other side. The 250 mg strength is available in bottles of 30’s (NDC 42794-013-08). Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Dispense in a tight, light-resistant container as defined in the USP. Rx ONLY Sigmapharm Laboratories, LLC Bensalem, PA 19020 OS014A-02 REV.0321
Precautions
Information about any special care to be exercised for safe and effective use of the drug.PRECAUTIONS Patients on prolonged therapy with any potent medication should be under close observation. Periodic monitoring of organ system function, including renal, hepatic and hematopoietic, should be done. Since griseofulvin is derived from species of Penicillium , the possibility of cross-sensitivity with penicillin exists; however, known penicillin-sensitive patients have been treated without difficulty. Since a photosensitivity reaction is occasionally associated with griseofulvin therapy, patients should be warned to avoid exposure to intense natural or artificial sunlight. Lupus erythematosus or lupus-like syndromes have been reported in patients receiving griseofulvin. Griseofulvin decreases the activity of warfarin-type anticoagulants so that patients receiving these drugs concomitantly may require dosage adjustment of the anticoagulant during and after griseofulvin therapy. Barbiturates usually depress griseofulvin activity and concomitant administration may require a dosage adjustment of the antifungal agent. There have been reports in the literature of possible interactions between griseofulvin and oral contraceptives. The effect of alcohol may be potentiated by griseofulvin, producing such effects as tachycardia and flush.
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 Prophylactic Usage - Safety and efficacy of griseofulvin for prophylaxis of fungal infections have not been established. Serious Skin Reactions Severe skin reactions (e.g, Stevens-Johnson syndrome, toxic epidermal necrolysis) and erythema multiforme have been reported with griseofulvin use. These reactions may be serious and may result in hospitalization or death. If severe skin reactions occur, griseofulvin should be discontinued (see ADVERSE REACTIONS section). Hepatotoxicity Elevations in AST, ALT, bilirubin, and jaundice have been reported with griseofulvin use. These reactions may be serious and may result in hospitalization or death. Patients should be monitored for hepatic adverse events and discontinuation of griseofulvin considered if warranted (see ADVERSE REACTIONS section). Animal Toxicology - Chronic feeding of griseofulvin, at levels ranging from 0.5%-2.5% of the diet resulted in the development of liver tumors in several strains of mice, particularly in males. Smaller particle sizes result in an enhanced effect. Lower oral dosage levels have not been tested. Subcutaneous administration of relatively small doses of griseofulvin once a week during the first three weeks of life has also been reported to induce hepatomata in mice. Thyroid tumors, mostly adenomas but some carcinomas, have been reported in male rats receiving grisoefulvin at levels of 2.0%, 1.0% and 0.2% of the diet, and in female rats receiving the two higher dose levels. Although studies in other animal species have not yielded evidence of tumorigenicity, these studies were not of adequate design to form a basis for conclusion in this regard. In subacute toxicity studies, orally administered griseofulvin produced hepatocellular necrosis in mice, but this has not been seen in other species. Disturbances in porphyrin metabolism have been reported in griseofulvin-treated laboratory animals. Griseofulvin has been reported to have colchicine-like effect on mitosis and cocarcinogenicity with methylcholanthrene in cutaneous tumor induction in laboratory animals. Usage in Pregnancy - see CONTRAINDICATIONS section. Animal Reproduction Studies - It has been reported in the literature that griseofulvin was found to be embryotoxic and teratogenic on oral administration to pregnant rats. Pups with abnormalities have been reported in the litters of a few bitches treated with griseofulvin. Suppression of spermatogenesis has been reported to occur in rats, but investigation in man failed to confirm this.
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