Epistane reviews are few in this forum, but there are lots of other great reviews in the other body building/fitness forums. From these other reviews, it would seem that Epistane would more likely increase libido than diminish it. It's a steroidal AI that works similarly to Nolvadex and Clomid to inhibit the estrogen receptor in breast tissues, but Epistane has an added protein synthesizing/anabolic affect on the tissues as well. I've noticed it is very effective in combating the lethargy accompanied by Superdrol, so I usually stack it with SD. I haven't noticed any increase in libido, but there certainly isn't any decrease. Then again all it takes for me to get going again is a new video.