The research I have read abut this supplement is contradictary at best.One studie will tell you it raises considerablly natural testostrone production ,DHT, estrogen. Then the next one says theres no proof of any of it increased libido or benifits in the gym. I also read that some have experienced gyno as a side effect of the herb. Has anyone ever used it? If so what was the results?Was there increased libido? And do you belive the gyno thing ?