Erec ndt tile dysfu qrn nction (ED) or (male) impo usa tence is a sex ujc ual dysfun dh ction characterized by the inability to develop or main xp tain an erect fzf ion of the pe if nis. There are various under ig lying causes, such as cardi vre ovascular leakage and diab wv etes, many of which are medi xbk cally trea kz table.

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