I don't have ED. Just NAHAIUTB (not-as-hard-as-it-used-to-be). I've tried both Viagra and Levitra (Vardenafil) and both work well. Take a 1/2 dose Levitra and my dick's so hard I'll put it up against a Ginsu anyday. Between that and the Clomid I'm on for PCT, I glued my girl to the ceiling this morning.