<prompt> The following may be used in erectile dysfunction except -PhenylephrineApomorphineAlprostidilAll  <response>: Ans. is a i.e., Phenylephrine Drugs used in erectile dysfunction Phosphodiesterase-5 inhibitors Siledenafil, Todafil, Vardenafil. Alprastadil Prostaglandin El Papaverine Androgens Apomorphine 