Supplement
Tongkat Ali
Eurycoma longifolia, Longjack
Legal / OTCHuman StudiesOral
Half-life
Unknown
Common dose
200-400mg/day of standardized extract
How it works
Root extract containing eurycomanone and other alkaloids. Inhibits SHBG to increase free testosterone, reduces cortisol, and has adaptogenic properties.
Commonly used for
Testosterone supportLibidoStressAthletic performance
Potential benefits
- Clinically shown to increase free testosterone in multiple trials
- Reduces cortisol and improves stress response
- Libido and sexual function improvement
- Legal and widely available
- Potential ergogenic benefit for athletes
Risks and downsides
- Effect size on testosterone is modest — not dramatic
- Quality varies enormously — extract ratio matters
- Takes 4-8 weeks for full effect
- May interact with blood pressure medications
- Not effective for hypogonadal men — only for natural optimization
Heads up: This is for educational purposes only and is not medical advice. Many compounds here are not FDA approved for human use. Please talk to a doctor before starting anything.
Risk level
Evidence
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