To be honest, Tbol didnt do anything for me.. I was talking to need2 about it and he told me so much about what it could have been. Overall he just said my body didn't respond to it like others. I was taking other supps so it's hard to say. But I didn't notice any killer strength increases. I gained a few lbs but I was eating a bit more and clean. So overall, I wouldnt do Tbol again. Not to discourage others from trying or doing it.