After 40 years of sexual dysfunction, different medications should be taken according to specific causes, which mainly include impotence, premature ejaculation and so on. 1. impotence: impotence refers to men can not sustain, maintain sufficient penile erection to complete a satisfactory sex life, mostly due to psychological factors, vascular, neurological, traumatic, surgical and other causes of the disease, can be treated through psychotherapy and taking sildenafil tablets, tadalafil tablets, vardenafil tablets and other drugs 2. Premature ejaculation: Premature ejaculation is a relatively common male sexual dysfunction disease, which may be caused by psychological factors, genetic variation, prostatitis, erectile dysfunction, thyroid disease, excessive sensitivity of the penis head, etc., which manifests itself as inability to control ejaculation time in the clinic, and short duration of sexual intercourse, etc., which can be treated by psychological therapy and taking paroxetine hydrochloride tablets, sertraline hydrochloride tablets, fluoxetine hydrochloride tablets and other medications. Drug treatment. It is recommended to go to the hospital for examination to clarify the cause of the disease, and then take medication under the guidance of the doctor, do not take without authorization.