I will keep this shorter than most reports because there is genuinely not much to say. I took 600mg Fadogia agrestis daily for 12 weeks (one full 8-week cycle, 2 weeks off, then 4 more weeks). Brand was Nootropics Depot, which is generally considered one of the more reputable supplement companies for quality control.
I felt nothing. No libido increase. No mood change. No gym improvements. No change in morning erections. No change in energy. Nothing.
I got blood work at baseline and at week 8. Total testosterone went from 612 ng/dL to 628 ng/dL. That is within the margin of normal daily fluctuation and is not a meaningful change. LH was essentially unchanged. Liver and kidney markers were all stable, which is at least reassuring on the safety front.
I am 28 years old and my testosterone was already in a healthy range. My theory is that Fadogia agrestis — if it does anything at all — may only produce noticeable effects in people whose testosterone is suboptimal to begin with. If your HPG axis is already functioning well, there may not be room for a plant extract to push it meaningfully higher.
Or it simply does not work in humans. That is also a real possibility that the supplement community is reluctant to entertain.
I did not experience any side effects either. No nausea, no testicular discomfort, no liver symptoms. It was, in every measurable and experiential way, identical to taking nothing. I have since redirected the $40/month toward creatine, which actually has human clinical evidence behind it.