The onset of action of Epimedium cannot be determined, this product has the effect of tonifying kidney yang and other effects, and should be used in accordance with medical advice. Epimedium belongs to Chinese herbal medicine, there is no pharmacokinetic study showing the specific onset of action of Epimedium. There are individual differences in the onset of action of this product due to factors such as individual constitution and sensitivity to drugs. Epimedium is pungent, sweet and warm in nature. It belongs to the liver meridian and kidney meridian. It has the effect of dispelling wind-dampness, tonifying kidney yang, and strengthening muscles and bones. It is used in treating kidney yang deficiency, spermatorrhea, impotence, rheumatism and paralysis, impotence of muscles and bones, numbness and contracture. For those with yin deficiency and fire exuberance (deficiency of yin and essence in the body and hyperactivity of deficiency fire), Epimedium should be used with caution. Adverse effects of this product are not clear. If necessary, it should be used under the guidance of a doctor’s diagnosis.