Clinically there is no best medicine for impotence, patients can be treated under the guidance of the doctor by using drugs such as sildenafil citrate, vardenafil hydrochloride or yohimbine hydrochloride. 1. Sildenafil citrate tablets: usually used in the treatment of erectile dysfunction, moderate use can promote vasodilatation, effectively improve the impotence of the situation, the patient should be discontinued in time if the use of headache, nausea and other adverse symptoms. 2. Vardenafil hydrochloride tablets: generally can stimulate the male lower cavernous body localized carbon monoxide release, so that the skin muscle relaxation, and increase the penile cavernous blood flow, and then improve male impotence, allergy is prohibited. 3. Yohimbine hydrochloride tablets: usually can effectively dilate the penile artery, improve penile blood flow, and stimulate the penile erection center, has a certain effect on the treatment of male impotence. It is forbidden for people with abnormal liver or kidney function or allergy. Men who have impotence should go to the hospital in time for examination and use the correct medication under the guidance of the doctor.