Deer antler, as a traditional Chinese medicine, is effective regardless of gender. If a man is suffering from kidney yang deficiency (lack of yang energy in the kidneys), deficiency of essence and blood, impotence and slippery semen, lethargy and fatigue (lack of mental energy), it is still useful to take deer antler, but due to the existence of individual differences, the specific effects may vary to a certain extent. Deer antler is the young unossified and densely antlered antlers of the stag of the deer family Sika deer or horse deer, which has the effect of strengthening kidney yang, benefiting essence and blood, reinforcing tendons and bones, regulating the Chong Ren, and supporting sores and poisons, and it can be used to improve or treat the deficiency of kidney yang and essence and blood, impotence and slippery spermatozoa, uterine cold and infertility, lethargy (meaning weakness), fatigue, and fear of cold and other symptoms. Men with these conditions are generally more effective with deer antler. It should be noted that the use of this product should be started from a small amount, slowly increase, should not be used suddenly a large number. Anyone with yin deficiency and hyperactivity (deficiency of yin fluid and hyperactivity of yang qi), blood division (in the four periods of warm disease, Wei qi and Ying blood, belonging to the deepest stage or location of the disease) with heat, blazing stomach fire, phlegm heat in the lungs, exogenous fever, children, diabetic patients are prohibited, and pregnant women are advised to be cautious in using the drug. The use of Chinese herbs should follow the principle of evidence-based medicine, do not blindly use Chinese herbs on their own, should be standardized under the guidance of a doctor.