From the point of view of the mechanism of action of the drug, Xuanju capsule does not have a direct vasodilating effect. From the clinical data, there is no relevant data to show that Xuanju capsule can improve the blood supply of the corpus cavernosum. Xuanju capsule belongs to a kind of proprietary Chinese medicine, the main ingredient of the drug is black ants, with nourishing the liver and kidney, paralysis and pain relief (through the paralysis of the limbs to relieve pain) effect. Xuanju Capsule is mainly used for the treatment of liver and kidney deficiencies (liver and kidney weakness) caused by fatigue (mental exhaustion, physical weakness), frequent urination, lumbar and knee weakness (lumbar and knee soreness and weakness), rheumatism paralysis and pain and rheumatoid arthritis seen in the above symptoms. The adverse reactions of Xuanju capsule are not clear, and it is forbidden for children and pregnant women. It should be noted that the drug should be taken after meals, and avoid cold and greasy food during the drug, should not be taken during the drug at the same time to take other laxative and tonic Chinese medicine. The drug should be used under the guidance of a professional Chinese medicine practitioner to identify the evidence, and should not be used on its own.