Terbinox 250 mg Tablet contains Terbinafine Hydrochloride, an antifungal agent used to treat fungal infections of the skin and nails such as athlete's foot, ringworm, jock itch, and fungal nail infections. It works by inhibiting the growth of fungi, thereby clearing the infection. Terbinox is typically taken orally once daily for a period depending on the type and severity of the infection. It is effective in treating dermatophyte infections and promotes healing by stopping fungal growth.