Silka® Antifungal Cream. Terbinafine hydrochloride cream 1%. Full prescription strength. Cures most athlete's foot. Cures most: Athlete's foot. Jock itch. Ringworm. Helps relieve: Itching. Burning. Cracking. Scaling. Uses: Cures most athlete's foot (tinea pedis). Cures most jock itch (tinea cruris) and ringworm (tinea corporis). Relieves itching, burning, cracking and scaling which accompany these conditions. Questions 1 877 99 GENOM (43666) Monday to Friday, 8 am to 6 pm Central Time.