The present invention relates to the use of antrodia camphorata in the treatment of skin conditions, allergic rhinitis, diabetes mellitus and its complications, cancer cachexia, hypercholesterolemia, gout in a subject in need of such treatment. The present invention is also directed to the use of antrodia camphorata in the prevention and treatment of oral cancer and arterial restenosis, in a subject in need of such prevention. The methods comprise the steps of: identifying a subject in need thereof, and administering to the subject a formulation comprising an effective amount of antrodia camphorata, whereby the symptoms in the subject are reduced or prevented. The composition can be a pharmaceutical composition or a nutraceutical composition.本發明涉及牛樟芝用於治療需要所述治療的個體的皮膚病状、過敏性鼻炎、糖尿病和其併發症、癌症惡病質、高膽固醇血症、痛風症的方法。本發明還針對牛樟芝用於預防和治療需要所述預防和治療的個體的口腔癌和動脈再狹窄的用途。所述方法包含以下步驟:鑒別有需要的個體;和對所述個體投予包含有效量的牛樟芝的製劑,由此減輕或預防所述個體的症狀。所述組合物可以是藥物組合物或營養藥物性組合物。