The present invention relates to compounds fromAntrodia cinnamomea. The present invention also relates to a composition and a method for treating or prophylaxis of hepatitis C virus (HCV) or human immunodeficiency virus (HIV) infection.本發明關於從牛樟芝萃取的化合物;本發明亦關於一種用於治療或預防C型肝炎病毒(HCV)或人類免疫缺乏病毒(HIV)感染的組合物或方法。