Rankings / Hormones & Endocrine
Tongkat ali (Eurycoma longifolia)
Hormones & Endocrine · Adaptogen / T-optimizer
Tier B
Bottom line
Read Off Label grades Tongkat ali (Eurycoma longifolia) as B (6.8/10) based on moderate evidence, low-med benefit magnitude, and a low-risk safety profile.
Huberman-driven surge in popularity.
Typical use: 200-400 mg/day standardized extract (1-2% eurycomanone, e. — OTC.
What this is
Huberman-driven surge in popularity. Modest but real testosterone signal in deficient men; doesn't push already-normal men supraphysiological. Better tolerated and better evidence than fadogia. Usage patterns vary — some cycle 5 on / 2 off; chronic-use safety appears fine at typical doses.
Mechanism
Malaysian 'longjack'; quassinoids (eurycomanone); proposed inhibition of SHBG and aromatase → increased free testosterone; mild antiestrogenic; adaptogenic-type stress response modulation
Dose & route
200-400 mg/day standardized extract (1-2% eurycomanone, e.g., LJ100)
Citations
- https://pubmed.ncbi.nlm.nih.gov/22429343/
- https://pubmed.ncbi.nlm.nih.gov/24142530/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC7747858/
Links go to the source. If a link is dead or you want something re-checked, let me know.
Common questions
- Does Tongkat ali (Eurycoma longifolia) work?
- Read Off Label rates the evidence for Tongkat ali (Eurycoma longifolia) as Moderate and the benefit magnitude as low-med, producing an overall grade of B (6.8/10). Huberman-driven surge in popularity.
- Is Tongkat ali (Eurycoma longifolia) safe?
- Tongkat ali (Eurycoma longifolia) has a low risk profile in published human data. Legal status: OTC. This is not medical advice — see the disclaimer.
- What is the typical dose for Tongkat ali (Eurycoma longifolia)?
- 200-400 mg/day standardized extract (1-2% eurycomanone, e.g., LJ100)
- How does Tongkat ali (Eurycoma longifolia) work?
- Malaysian 'longjack'; quassinoids (eurycomanone); proposed inhibition of SHBG and aromatase → increased free testosterone; mild antiestrogenic; adaptogenic-type stress response modulation
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.