i know everyone hates the andros on this board but I have to say that this stuff is pretty cool. It does not convert to estrogen because this supp. is the precurser to DHT. It also suppresses estrogen receptors as wel. It's not really a bulking drug but more of a cutting one. I also think it helps to put a lifter into a great intense state of mind when working out and definately increases strength. I was quite happy with it and actually got a few more bottles so i could experiment with a stack. i know a couple of guys who use it when coming off their gear cycles and think it's great when inbetween cycles...But I don't know shit about 'roids...it's just what I've been told.