In general, if you can use Epimedium correctly, usually there is no obvious harm to the body, this drug Yin deficiency fire (Yin essence deficiency in the body, the appearance of deficiency fire hyperactivity) is prohibited, the use of which may aggravate the condition of the situation and other occurrences. Epimedium is a Chinese herbal medicine with the efficacy of dispelling wind-dampness, strengthening muscles and bones, and tonifying kidney yang, with sweet and pungent taste, warm nature, and belonging to the kidney and liver meridians, it is suitable for the treatment of renal yang deficiency and decline (deficiency of yang qi in kidneys), rheumatism and paralysis, and numbness and constriction, and other diseases. The adverse effects of the drug are not clear, and its harmful effects are mostly manifested in improper use, for example, people with yin deficiency and fire exuberance may experience aggravation of the condition after use. Patients need to strictly follow the doctor’s instructions when using the drug, not to use the drug on their own to prevent adverse effects.