I ran the classic Huberman testosterone stack — Fadogia agrestis 425mg with Tongkat Ali 400mg — for 16 weeks total (two 8-week cycles of Fadogia with Tongkat Ali continuous throughout). I kept detailed notes and got blood work at baseline, week 8, and week 16.
The bottom line: my total testosterone went from 445 ng/dL to 512 ng/dL at week 8, then to 498 ng/dL at week 16. Free T improved proportionally. LH went up modestly. These are real but not dramatic changes — roughly a 12-15% increase that stabilized.
Subjectively, the libido increase was the clearest signal. By week 3 I was noticeably more interested in sex, and this persisted through both cycles. My wife noticed before I mentioned it, which I take as better evidence than my own potentially biased self-assessment.
Gym performance improved marginally. Maybe 5% stronger on compound lifts over 16 weeks, which is within what I might have achieved through training alone. Recovery between sessions felt slightly better.
Mood was modestly improved — a subtle but persistent feeling of being slightly more "on" than usual. More willing to tackle tasks I would normally procrastinate on. Not life-changing but noticeable.
Side effects: mild stomach discomfort for the first week, which resolved. No other issues. Liver and kidney markers on blood work were stable across all three draws, which was reassuring.
My honest rating: Fadogia agrestis plus Tongkat Ali produced a real but modest effect on my hormonal profile and subjective experience. It is not the dramatic transformation that supplement marketing implies. If someone has realistic expectations — think 10-15% improvement, not a return to age 20 — and is willing to monitor their health with blood work, it is a reasonable experiment. But I fully acknowledge that I cannot separate the Fadogia contribution from the Tongkat Ali contribution, and that the lack of human safety data remains a legitimate concern.