Fadogia Agrestis
Research Reliability -
A West African shrub extract popularized for libido and testosterone support, with far thinner human research than its popularity suggests.
Appetite
Mood
Sleep
Fadogia Agrestis
Description
Fadogia agrestis rose to mainstream biohacking awareness largely through internet and podcast discussion rather than a deep clinical evidence base — the supporting research is almost entirely confined to rodent studies showing testosterone increases at doses and durations that do not map cleanly onto human supplementation. This is a case where popularity has outpaced data, and rodent studies using extended high-dose protocols showed testicular tissue changes, which is why most cautious longevity physicians recommend short cycles rather than continuous year-round use, plus regular hormone panel monitoring rather than assuming it is working.
Effects
First 1–2 weeks
some notice libido or drive changes
Weeks
often stacked with tongkat ali
Caution
human safety data is limited; cycle it
How it Feels
Some men report increased libido and drive within a week or two, and it is commonly paired with tongkat ali. Be aware the human safety data is thin, with animal studies raising organ-toxicity questions at high doses, so conservative dosing and cycling are wise. This is a use-with-caution compound.
Usage
Entry Dose
300mg
Standard Dose
600mg
Max Dose
1200mg
Onset
1–2 weeks
Combinations
Pairs well with
Synergistic
Tongkat Ali — frequently stacked together commercially, though combined human safety data is even thinner than for either alone
Zinc — supports the testosterone synthesis pathway broadly
Avoid combining
Contraindicated
Continuous, uncycled long-term use — rodent data raises questions about extended high-dose exposure
Hormone-sensitive cancers — caution given hormonal activity
Pregnancy — contraindicated
Using without baseline and follow-up hormone testing — not recommended
Biomarkers to Track
Subjective
(Daily)
Libido (1–10)
Energy and motivation
Mood
Objective
(Quarterly)
Total and free testosterone (baseline and follow-up)
Liver enzymes (ALT, AST)
LH and FSH
Limited human safety data, and animal studies raise organ-toxicity concerns at high doses. Approach with real caution.
Anyone wanting established safety, men with hormone-sensitive conditions, and long-term daily users.
Taking high doses continuously, when conservative dosing and cycling are wiser given the thin data.
Animal / preclinical only
No human clinical trials exist for Fadogia agrestis. All available efficacy data are from rat studies, some of which also raised hepatic and testicular toxicity signals at higher doses. Popular testosterone claims are not supported by any human evidence.
Yakubu MT, Akanji MA, Oladiji AT (2005). Asian Journal of Andrology, 7(4), 399-404. Animal study (rat testosterone and reproductive parameters). PMID: 15908133.