For some reason it's not talked about a lot anymore, but before PP created the "TRS stack" and promoted those supplements more as a use for PCT, A LOT of people ran Sustain (most notable the transdermal version) for test boosting purposes and most had nothing but amazing things to say about it. From libido, to energy levels, overall well being...it was amazing. Now...seems people only use it in PCT anymore...Don't know why, or what happened really...but I think you should enjoy Sustain + TCF-1