I have been taking it for 4 years...it offers zero performance enhancement in any area whatsoever, but for those > 35 it helps balance hormones better apparently or so my doctor says so I take it. But before to after...no difference in anything I do or the way I look, but my bloodwork shows DHEA is at an optimal level. I feel there are so many supplements like DHEA that should not be on the banned list but due to lack of knowledge and laziness to actually research it thoroughly they ban it anyway.