There is no such thing as the best thing to tonify the kidneys, Epimedium, Bone-setting and other traditional Chinese medicines have the effect of tonifying the kidneys and strengthening the yang (the effect of tonifying the kidneys and yang), and according to the condition of the reasonable use of medication, there will generally be a good effect. Epimedium has the effect of tonifying the kidney and strengthening the yang, strengthening the tendons and bones, and dispelling wind-dampness, which can be used for impotence and spermatorrhea, impotence and weakness of the tendons and bones, wind-cold-dampness paralysis (wind, cold and dampness are three kinds of evils invading the human body leading to paralysis of the limbs), and numbness and constriction. The adverse effects of Epimedium are not clear, and it is not suitable for people with yin deficiency and fire (deficiency of yin and essence in the body, and hyperactive fire). It has the effect of warming the kidney to help yang (warming and tonifying the yang qi of the kidneys), holding qi and calming asthma (astringing the qi to alleviate coughing and asthma), warming the spleen to stop diarrhea (alleviating diarrhea by warming the spleen), and eliminating wind to dispel blemishes, and can be used for impotence and spermatorrhea, urination and urination frequency, lumbar and knee coldness, and renal deficiency and asthenia. Adverse effects are not clear, the nature of this product is warm and dry, can hurt the yin to help fire, so yin deficiency and fire, constipation should not be taken. If you have a need for medication, it is recommended to use it under the guidance of a professional physician, not blindly self-medication.