I asked my dr. here recently about it and he informed me that he used to compete regularly and did use for a few years. He asked me what I was taking because of my high blood pressure and the fact that I told him I was a lifter and told him dhea, tribulus, and protein. He said the trib and protein work fine but all dhea was was hype and it's been proven in both the lab and from personal use according to him. I wouldn't hurt to buy some and try it until the bottle runs out. I do know it's very inexpensive.