When I first saw the ingredient profile on this product, I had to have it. It contained ZMA, Tribulus, and LongJack(eurycoma). Got it for relatively cheap on BB.com(60ct.). I'm not big on tribulus but really like LongJack. The problem with this, for me, was the low potency of both. I planned on taking it right before bed, considering it contained ZMA. The directions say not to though because it can cause sleeplessness. I took 2 in the morning and 2 pre workout. I've tried potent LongJack products(LJ100) and had a nice boost in test. With this, I didn't feel a thing. Libido pretty much stayed the same and didn't have that rage in the gym. I love sci-fit, but this product was a flop for me.