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1/5 Very weak evidence

Testosterone booster evidence brief

Fadogia agrestis

Fadogia is popular in testosterone stacks, but there are no convincing human trials for testosterone, strength, hypertrophy, or gym performance.

No human gym evidence strength / hypertrophy / health 6 linked sources Content audit 2026-05-04

Headline Finding

Key hormone claim comes from rat data; chronic rat studies also raise testicular, liver, and kidney safety concerns.

Dose Context

Human dose, effective range, and long-term safety are not established. Product extracts also vary widely.

Important Caveat

This is a high-hype, low-evidence entry with unusually poor human safety data for a mainstream testosterone-stack ingredient.

Source Drawer

Linked Research

6 papers and evidence links - audit 2026-05-04
  1. Review Rat testosterone/aphrodisiac study
  2. Full text Rat testosterone PDF
  3. Review Rat testicular function study
  4. Review Rat testicular function PubMed
  5. Review Rat liver/kidney cellular toxicity
  6. Systematic review Testosterone boosters systematic review

How To Read This Rating

The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.

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Send the disputed claim, source link, and why it changes the practical verdict. Corrections that materially affect the claim, dose, caveat, or rating are prioritized.

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