What it is
A flowering plant native to Southeast Asia. The root extract is sold as a dietary supplement, often standardized to eurycomanone or as a water-soluble extract (e.g., Physta).
How it works
Quassinoids (including eurycomanone) are proposed in preclinical and clinical studies to modulate steroidogenic enzymes and reduce SHBG, with downstream effects on free testosterone.
Where it's used
Used as a dietary supplement marketed for male hormonal support. Studied in small clinical trials for effects on serum testosterone and SHBG.
FDA-approved use
Regulated as a dietary supplement.
Tracking it
Tongkat Ali is oral, which makes consistency the whole game — a simple daily check-off with a reminder beats memory every time.
Source
Public reference
Not medical advice. This page is an educational summary compiled from public
sources for people who log what they take. It is not a recommendation to use
Tongkat Ali, a dosing guide, or a substitute for a clinician.
How we source →
Last reviewed 2026-06-11