Kidney tonic drugs can generally be divided into two categories: kidney yin tonic drugs and kidney yang tonic drugs. Kidney yin tonic drugs include wolfberry, chasteberry, and ink lotus; and kidney yang tonic drugs include deer antler, eucommia, and cistanchis. Wolfberry is a kidney yin tonic with the effects of nourishing the liver and kidney, benefiting the essence and brightening the eyes (tonifying the essence and promoting the recovery of eyesight), and is a good medicine for treating liver and kidney yin deficiency (deficiency of yin in the liver and kidneys), which is applicable to the dryness of the eyes, blurring of the eyes, soreness of the waist and knees, and dizziness caused by the deficiency of the liver and kidney yin. It should be taken with caution for those who suffer from diarrhea due to spleen deficiency (diarrhea caused by weak function of the spleen). Deer antler has the effect of strengthening kidney yang, benefiting essence and blood, strengthening muscles and bones, and regulating Chong Ren, etc. It is an important medicine for tonifying kidney and strengthening yang (the effect of tonifying kidney yang), and is mainly used for treating deficiency of kidney yang (lack of yang qi of kidney), deficiency of essence and blood, coldness of cold limbs (fear of coldness, and coldness of limbs), impotence and premature ejaculation. It is contraindicated in cases of yin deficiency and hyperactivity of yang (deficiency of yin fluid and hyperactivity of yang). The above medications should be used properly under the guidance of a doctor, and should not be used blindly on your own. If you need medication, please consult a regular hospital and follow the doctor’s instructions.