Let me say first that I have only used this product for three consecutive days. I started with 4 pre workout on the first day, moved to 5 the second, and topped out with six on the third. Here is what I experienced.
The most absolutely noticable effect of this product by my way of thinking is the extreme enhancing of male sex drive. Never wanted to **** ANYTHING female so bad in my life. And I did. Icariin is definitely an excellent sex drive booster. This lends credence to the proclaimed increase in testosterone.
Now, this is the part where a lot of you are probably going to disagree with me. Keep in mind I took six of these little bastards on the third day. I have to be honest and say that the insane drive you all keep raving about felt pretty much like a caffeine high to me. I mean, to really be convinced, I would have to sample a stim-free version of the product. I am NOT convinced that this product gave me energy in the gym any better than caffeine or ephedrine products. My weights DID go up on all workouts, however. Keep in mind that they usually do.
Perhaps, if I had had a larger sample to use over an extended period of time, the cumulative effect of using the product would have caused me to be a believer. BEFORE YOU CHASTISE ME, however, let me just say that I do like this product, and depending on the price, I am likely to at some point purchase it in the future.
I am on the fence, in other words. I think its good, but as good as you all say it is? I am not so sure.