Lamisil (terbinafine) is an antifungal medication that fights infections caused by fungus. It is also used to treat infections caused by fungus that affect the fingernails or toenails. Lamisil oral granules are used to treat a fungal infection of scalp hair follicles in children who are at least 4 years old.
Some individual taking Lamisil have developed severe liver morbidity leading to liver transplant or death. It is not clear whether terbinafine actually predisposed the liver damage in these patients. In most cases, the patient had a serious medical condition prior taking Lamisil.
Call your physician at once if you have symptoms of liver damage, such as nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes). These events can occur whether or not you have ever had liver problems before.
Common side effects of Lamisil include headache. Other side effects include diarrhea, dyspepsia, and skin rash. See below for a comprehensive list of adverse effects.
Fingernail onychomycosis: One 250 mg tablet once daily for 6 weeks. Toenail onychomycosis: One 250 mg tablet once daily for 12 weeks.