I took Testofuel for a couple months, I have been working hard on gaining strength and size so my numbers and PR's have been increasing. After a couple months I figured the Testofuel wasn't probably doing anything so I quit taking it. Over the next couple weeks I started losing some strength and my libido was in the tank. I figured I was over training so I took it a bit easier and tried to work back up but I seemed to be stuck.
Then I started to think, I wonder is that Testofuel was actually helping me? I had totally forgot about the Testofuel so I figured the placebo effect wasn't part of my issue. So I started taking it again and everything seems to be going good again, including libido. This could all be placebo I admit it for sure but the timing was pretty strange.
I'm back on it and will take it until I am out again and see if things change for the worse. As of right now I would recommend it.
Bottom Line: Yes, I would recommend this to a friend