Do a lot of people use caverject (alprostadil) (prostaglandine1) for impotence? how effective is this?

FDA approved: Medications have to be proven effective in one way or another before FDA will approve them. So yes, Caverject (alprostadil) is effective at treating erectile dysfunction. However, it does require injection so it's less popular than oral PDE-5 inhibitors eg Cialis, Levitra, (vardenafil) Staxyn & Viagra. Muse is intraurethral suppository form of alprostadil. Benefit of alprostadil is use in conjunction w/nitrate