Terbinafin

Terbinafin is a synthetic antifungal medication belonging to the allylamine class. It is primarily used to treat a variety of fungal infections of the skin and nails. Terbinafin works by inhibiting an enzyme called squalene epoxidase, which is essential for the synthesis of ergosterol. Ergosterol is a vital component of fungal cell membranes. By disrupting ergosterol production, terbinafin weakens the fungal cell membrane, leading to cell death.

The most common uses for terbinafin include treating dermatophytoses, such as ringworm (tinea corporis), jock itch (tinea cruris), and athlete's foot (tinea pedis). It is also highly effective against onychomycosis, which is a fungal infection of the nails. Terbinafin is available in both oral and topical formulations. Oral terbinafin is typically prescribed for more extensive or stubborn infections, particularly nail infections, while topical preparations are used for localized skin infections.

Side effects of oral terbinafin can include gastrointestinal disturbances such as nausea and diarrhea, headache, and skin rash. Less commonly, it can cause liver problems, and regular monitoring of liver function may be necessary for patients on oral treatment. Topical terbinafin generally has fewer systemic side effects, with local irritation or allergic reactions being the most frequent concerns. It is important to use terbinafin as directed by a healthcare professional and to complete the full course of treatment to ensure the infection is eradicated.