Just FYI... Minoxidil (Rogaine) is topical and will not interfere with your hormones the way finasteride or other oral meds will.
AND estrogen will cause ED. It hit me about three months in. I suddenly realized, no more morning wood. Then it progressed to being unable to keep it up. But sensation is still there and orgasm still happens. It is just different. I doubt Viagra will help. I had been using it pre-transition while still married. When I started to transition, my Primary was reviewing past meds and asking why I was prescribed sildenafil. It's like, do you want to use that thing or not? I laughed and told her that was an old prescription that I have not had refilled in a long time.
