Erec ve tile dysfu mi nction (ED) or (male) impo xa tence is a sex ou ual dysfun gy ction characterized by the inability to develop or main yv tain an erect bs ion of the pe oqz nis. There are various under gnz lying causes, such as cardi um ovascular leakage and diab stl etes, many of which are medi cho cally trea bou table.

3 different tablets are currently avai ql lable from the doc axk tor and these work when there is se ore xual stimul xtq ation. Depe ugz nding on the treatment, it will need to be taken 20 minutes to 1 hour before se av x and the period of time over which it works can vary between 3 hours and up to 36 hours.