沉香

味辛苦性温.入手足太阴足阳明少阴经.功专治气淋精寒.得木香治胞转不通.得肉苁蓉治大肠虚闭.得紫苏、白蔻仁为末.以柿蒂汤服.治胃冷久呃.色黑沉水者良.入汤剂磨汁.入丸散纸裹置怀中.待燥碾之.忌火.