I'm an Estrogen pit if I even touch Tribulus or anything else natty - even after a killer workout and I refuel, my body always goes into an anabolic state which is fantastic, followed lastly with a rush of Estrogen - nipples start to itch like a bitch. Erase and Erase Pro are the exact same thing; they do nothing for me neither. Letrozole is all I been using for last few years - (it works good enough) everything else I've tried was a waste of money. That and a bottle of Cialis and you're are good to go.