Hi, Terbiforce tablet contains terbinafine which belongs to the group of medications known as antifungals is used to treat a wide range of fungal infections of the skin and nails, including ringworm. It works by killing the fungus that causes the infection. Ketoconazole or miconazole can be taken as an alternative to terbinafine. Side effects of Terbiforce are nausea, vomiting, headache, rash, abnormal liver enzyme, diarrhoea or constipation, indigestion, mood swings, lethargy, severe chest pain, irregular heartbeat, peeling of skin, loss of appetite, abdominal pain, arthralgia, myalgia, allergic reactions etc. Take care. Hope I have answered your questions. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician