I dont kniow if it was some of the anti-e, but I remember a feeling of being bloated...
in other words, Im not sure if the anti-e is in there for a reason, or just "for fun".
I have been wondering this too. ALthough, I beleive (and I could be totally wrong) that it IS a progestin, it may have been a modification of the progestin they use that they give to sex offenders to kill their sex drive. -doesn't sound correct, but im going off the top if my head here)
I DO remember it making me pretty hungry,.. like, "after sex" hungry
Also,.. I havent been able to find anyone who has used it solo.