It is composed of Black Ant, Epimedium, Fructus Lycii and Serpentine, among which Black Ant has the function of nourishing Yin and Yang, filling essence and consolidating marrow and enhancing sexual function; Epimedium tonifies Kidney Yang and strengthens tendons and bones; Serpentine has the function of warming Kidney and Yang, while Fructus Lycii is a Yin tonic with the function of tonifying Liver and Kidney, benefiting essence and brightening eyes. It is easy to see that compound Xuanju capsule mainly has the effect of warming the kidney and strengthening Yang, benefitting essence, dispelling rheumatism, etc. It is mainly used for kidney Yang deficiency and other evidence, clinically common fatigue, mental weakness, weakness of the waist and knees, coldness of the Yin apparatus in the lower abdomen, cold and slippery discharge of essence, cold limbs, frequent urination, low libido, impotence, sexual dysfunction, etc. It can also be used to improve the symptoms of rheumatoid arthritis and rheumatoid paralysis caused by insufficient kidney Yang, joint pain, swelling, etc. . The adverse reactions found in the clinical application of compound Xuanju capsule are relatively few, a few people may experience gastrointestinal discomfort such as nausea, vomiting, gastric distension, burning sensation in the stomach and epigastrium, dizziness and skin allergy as side effects after taking it. For gastrointestinal discomfort, side effects can be reduced by taking it after meals or by reducing the dosage. Since black ant is an animal medicine with a protein content of 65% or more, special attention should be paid to the occurrence of adverse reactions such as allergic reactions and skin rashes when taking it. In addition, it should be used with caution by those with Yin deficiency and fire, those with allergy to compound Xuanju capsule or those with hypersensitivity.