one thing i hate about MDMA is its relationship to Methamphetamine, i used to have a pretty serious meth habit for 3 years, everyday. And up till then id always loved MDMA for like a once a month thing. Anyways after using meth so long, i tried mdma a few times, but it felt nothing like i remember. My heart started racing, i felt dizzy, very uncomfortable!!!! i know people will say PMA, but it wasnt cuz the other people that took these 2 different sets of pills loved them. So im not sure, maybe it affected my serotonin or something