Zanyu Dan is used to treat impotence, spermatic failure and infertility. It has the effect of tonifying the kidneys and strengthening the yang (tonifying the kidneys and yang). It can be used for treating impotence and seminal failure, infertility with cold Yin, pale tongue and white fur, and sluggish pulse. Zanyu Dan can be taken with warm boiled water, or it can be changed to soup and decocted, and the dosage should be reduced to the regular dosage of soup. It should be noted that people with allergies should be cautious. Other than that, its adverse effects and precautions are unknown. It is necessary to use the drug under the guidance of a doctor, do not use the drug blindly, in order to avoid adverse effects.