Propecia and Gaining Muscle

Well, I’m starting to thin on top, at the ripe old age of 23, and went out and got a prescription for propecia. I’ve heard some stories around the weightroom that propecia, which blocks dihydroxytestosterone, has a lot of nasty, demasculating effects–loss of libido, harder to build muscle.

Just wondering if any of you guys have heard of this or have or have not experienced it. I’ve already done a pubmed and T-Nation search on this topic but can’t seem to find any specific studies. Thanks in advance for any help.