First off let me appologize for being new here and opening up an old thread. I figured better to just add my 2 cents here than start an entirely new thread.
My feeling is that the sexual side effects caused by minoxidil may be related to collagen. There are studies around that show that minoxidil reduces collagen synthesis, thereby reducing the amount of collagen in the body. This is often thought to be why the side effects of minoxidil are increased wrinkles, dark circles under eyes and enlarged pores, as the skin has a great deal of collagen in it. The penis does as well, so perhaps this lack of collagen is making a full erection more difficult.
I have been on minoxidil for about 9 years now and in retrospect, do not recall having "morning wood" since I started. I had feared this was due to age (Im 38 now), but perhaps minoxidil played a roll. A while back I took Collagen type 1&3 supplement and would wake up in the morning with morning wood for the first time since my 20s. I only used it for a few weeks, and when I stopped so did the morning wood.
I realize this hardly scientific, but it is interesting and may be worth trying for some people. May even help with other minox related skin problems. I think Ill try it again and see if it helps.
