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Griseofulvin (Fulvicin P/G, Fulvicin U/F, Gris-Peg, Grisactin)

Category:

  • Antifungal

Description:

  • Systemic antifungal

Indications:

  • Fungal infections of the skin, hair, and nails caused by susceptible organisms.

  • Antifungal spectrum usually includes: Trichophyton rubrum, T. tonsurans, T. mentagropytes, T. interdigitalis, T. verrucosum, T. megninii, T. gallinae, T. crateriform, T. sulphureum, T. schoenleinii, Microsporum audouinii, M. canis, M. gypseum, Epidermophyton floccosum

Contraindications:

  • Porphyria

  • Hepatocellular failure

Precautions:

  • Pregnancy category C; avoid use during pregnancy; use caution in nursing mothers

  • Penicillin allergy (possible cross-sensitivity)

  • Lupus erythematosus

Adverse Reactions (Side Effects):

  • CNS: dizziness, fatigue, headache, insomnia, mental confusion, paresthesias

  • GI: diarrhea, epigastric distress, BI bleeding, hepatic toxicity, nausea, oral thrush, vomiting

  • GU: menstrual irregularities, proteinuria

  • HEME: granulocytopenia, leukopenia

  • SKIN: angioneurotic edema, photosensitivity, rash, urticaria  

Dosage:

Administered orally (microsize tablets, ultramicrosize tablets, suspension)

  • Adult: (microsize) PO 500-1000mg daily in single or divided doses; (ultramicrosize) 330-375mg daily in single or divided doses, max 750mg daily

  • Child: > or = 2 years: PO (microsize) 10-15 mg/kg/day in single or divided doses; (ultramicrosize) 5.5-7.3 mg/kg/day in single or divided dose

Duration of Treatment:

Condition Duration
Tinea corporis 2-4 weeks
Tinea capitis at least 4-6 weeks
Tinea pedis 4-8 weeks
Tinea unguium 3-6 months

Drug interactions:

  • Reduces the response of : Aspirin, Cyclosporine, Oral Contraceptives, Tacrolimus, and Warfarin

  • Phenobarbital: reduces plasma griseofulvin level

Special considerations:

  • Prior to therapy, the type of fungus responsible for infection should be identified

  • Response to therapy may not be apparent for some time; complete entire course of therapy

  • Avoid prolonged exposure to sunlight

  • Clinician should be notified if sore throat or skin rash occurs

  • Store suspension at room temperature in light-resistant container

 


The information contained here is an abbreviated summary. For more detailed and complete information, consult the manufacturer's product information sheets or standard textbooks

Source: Operational Medicine 2001,  Health Care in Military Settings, NAVMED P-5139, May 1, 2001, Bureau of Medicine and Surgery, Department of the Navy, 2300 E Street NW, Washington, D.C., 20372-5300

This information is provided by The Brookside Associates.  The Brookside Associates, LLC. is a private organization, not affiliated with any governmental agency. The opinions presented here are those of the author and do not necessarily represent the opinions of the Brookside Associates or the Department of Defense. The presence of any advertising on these pages does not constitute an endorsement of that product or service by either the US Department of Defense or the Brookside Associates. All material presented here is unclassified.

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