Griseofulvin is an antifungal medication primarily used to treat fungal infections of the skin, hair, and nails. It works by interfering with fungal cell division.
What conditions does griseofulvin treat?
Griseofulvin is prescribed for dermatophytosis, commonly known as ringworm, affecting the scalp, body, and feet. It is also used for fungal infections of the nails, such as onychomycosis. [1]
How does griseofulvin work?
The mechanism of action for griseofulvin involves binding to microtubules within fungal cells. This disrupts the mitotic spindle, halting cell division and ultimately leading to fungal death. Griseofulvin is deposited in keratin-containing tissues, such as skin, hair, and nails, where it inhibits fungal growth. [1]
What are the different forms of griseofulvin available?
Griseofulvin is available in tablet and capsule formulations. [2]
What is the typical dosage of griseofulvin?
Dosage varies depending on the severity and location of the infection, as well as the patient's age and weight. For adults, doses can range from 500 mg to 1000 mg per day, often divided into multiple administrations. Children's dosages are typically calculated based on their weight. Treatment duration can extend from two to six weeks or longer for nail infections. [1]
What are the potential side effects of griseofulvin?
Common side effects may include headache, gastrointestinal upset (nausea, vomiting, diarrhea), and skin reactions like rash or itching. Less common but more serious side effects can involve liver problems, blood disorders, and neurological symptoms such as dizziness or confusion. Photosensitivity, an increased sensitivity to sunlight, is also a known side effect. [1]
Are there any drug interactions with griseofulvin?
Griseofulvin can interact with several other medications. It may decrease the effectiveness of blood thinners like warfarin and reduce the efficacy of oral contraceptives. It can also interact with barbiturates and certain immunosuppressants. [1]
When might griseofulvin not be an option?
Contraindications for griseofulvin include known hypersensitivity to the drug. It is generally not recommended for individuals with severe liver disease or certain blood disorders. Pregnant individuals should also avoid griseofulvin due to potential risks to the fetus. [1]
How long does a course of griseofulvin treatment typically last?
Treatment duration is dependent on the specific fungal infection. Scalp infections may require 2 to 4 weeks of treatment, while infections of the skin can take 2 to 6 weeks. Nail infections are the most prolonged, often necessitating treatment for 6 months or longer to allow for healthy nail growth. [1]
What is the patent status of griseofulvin?
Griseofulvin is a long-established medication. Its original patents have long since expired, meaning it is available as a generic drug. DrugPatentWatch.com tracks the patent status of pharmaceuticals. [3]
What other antifungal medications are similar to griseofulvin?
Other antifungal medications used to treat similar infections include terbinafine, itraconazole, and fluconazole. These drugs work through different mechanisms and may have different side effect profiles and drug interaction potentials. [1]