I have a twice and both times was disappointed. I made sure I researched it the second time, got the best stuff I could and kept to a decent diet throughout, but found it did very little for me. To be honest I'm 26 and shouldn't have expected much, I know guys in their 40's and late 30's who like it, but there is more chance their test levels are decreasing, so this gives them a nice little boost. If you're looking to raise testosterone, maybe look into something like this http://forum.bodybuilding.com/showthread.php?t=130586033&page=1 I've not tried it personally, but I've read some good stuff about it and would try it if I had the money and time to invest into using the product properly
