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Griseofulvin
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Medically reviewed by Fedorchenko Olga Valeryevna, Pharmacy-Provisor. Last updated on 2019.12.06

Name of the medicinal product

Krisovin

Qualitative and quantitative composition

Griseofulvin

Therapeutic indications

The information provided in Therapeutic indications of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Therapeutic indications in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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Krisovin-PEG® (Krisovineofulvin ultramicrosize) is 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. Krisovineofulvin is not effective in the following: bacterial infections, candidiasis (moniliasis), histoplasmosis, actinomycosis, sporotrichosis, chromoblastomycosis, coccidioidomycosis, North American blastomycosis, cryptococcosis (torulosis), tinea versicolor and nocardiosis.

Dosage (Posology) and method of administration

The information provided in Dosage (Posology) and method of administration of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Dosage (Posology) and method of administration in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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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 credits 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. Krisovineofulvin will not eradicate the bacterial or monilial infection. Krisovin-PEG® tablets 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 Krisovineofulvin 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 Krisovineofulvin 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.

Contraindications

The information provided in Contraindications of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Contraindications in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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Two cases of conjoined twins have been reported since 1977 in patients taking Krisovineofulvin during the first trimester of pregnancy. Krisovineofulvin 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 Krisovineofulvin.

Special warnings and precautions for use

The information provided in Special warnings and precautions for use of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Special warnings and precautions for use in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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WARNINGS

Prophylactic Usage

Safety and efficacy of Krisovineofulvin 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 Krisovineofulvin use. These reactions may be serious and may result in hospitalization or death. If severe skin reactions occur, Krisovineofulvin should be discontinued (see ADVERSE REACTIONS section).

Hepatotoxicity

Elevations in AST, ALT, bilirubin, and jaundice have been reported with Krisovineofulvin use. These reactions may be serious and may result in hospitalization or death. Patients should be monitored for hepatic adverse events and discontinuation of Krisovineofulvin considered if warranted (see ADVERSE REACTIONS section).

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 Krisovineofulvin 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 Krisovineofulvin 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 Krisovineofulvin. Krisovineofulvin decreases the activity of warfarin-type anticoagulants so that patients receiving these drugs concomitantly may require dosage adjustment of the anticoagulant during and after Krisovineofulvin therapy. Barbiturates usually depress Krisovineofulvin activity and concomitant administration may require a dosage adjustment of the antifungal agent. There have been reports in the literature of possible interactions between Krisovineofulvin and oral contraceptives. The effect of alcohol may be potentiated by Krisovineofulvin, producing such effects as tachycardia and flush.

Undesirable effects

The information provided in Undesirable effects of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Undesirable effects in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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There have been post-marketing reports of severe skin and hepatic adverse events associated with Krisovineofulvin 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 Krisovineofulvin, they are usually associated with high dosages, long periods of therapy, or both.

To report SUSPECTED ADVERSE REACTIONS, contact Valeant Pharmaceuticals North America LLC at 1-800-321-4576 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Overdose

The information provided in Overdose of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Overdose in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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No information provided.

Pharmacokinetic properties

The information provided in Pharmacokinetic properties of Krisovin is based on data of another medicine with exactly the same composition as the Krisovin of the medicine (Griseofulvin). Be careful and be sure to specify the information on the section Pharmacokinetic properties in the instructions to the drug Krisovin directly from the package or from the pharmacist at the pharmacy.
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Following oral administration, Krisovineofulvin 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 Krisovineofulvin is approximately one and one-half times that of the conventional microsize Krisovineofulvin. This factor permits the oral intake of two-thirds as much ultramicrocrystalline Krisovineofulvin 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 Krisovineofulvin tablets were compared with 250 mg ultramicrocrystalline Krisovineofulvin tablets that were physically altered (crushed) and administered with applesauce. The 250 mg ultramicrocrystalline Krisovineofulvin tablets were found to be bioequivalent to the physically altered (crushed) 250 mg ultramicro-crystalline Krisovineofulvin tablets (See Table 1).

Table 1: Mean (± SD) of the Pharmacokinetic Parameters for Krisovineofulvin administered in applesauce as a Single Dose of Krisovin-PEG® 250-mg Tablets Uncrushed and Crushed to fasted Healthy Volunteers (N=24)

  250 mg Ultramicrocrystalline Krisovineofulvin Tablets Unaltered 250 mg Ultramicrocrystalline Krisovineofulvin Tablets Physically Altered (Crushed and in Applesauce)
Cmax (ng/mL) 600.61 (± 167.6) 672.61 (± 146.2)
Tmax (hr) 4.04 (± 2.2) 3.08 (± 1.02)
AUC (ng•hr/mL) 8618.89 (± 1907.2) 9023.71 (± 1911.5)

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