Tongkat Ali — Supplements
Southeast Asian adaptogen with eurypeptide-mediated testosterone support and ergogenic properties.
Overview
Tongkat ali (Eurycoma longifolia) is a Southeast Asian medicinal plant containing eurypeptides, quassinoids, and alkaloids that support testosterone levels through multiple mechanisms including aromatase inhibition, SHBG reduction, and Leydig cell stimulation. Multiple RCTs demonstrate improvements in testosterone levels, stress hormones (cortisol reduction), sexual function, and body composition. A systematic review of 9 RCTs confirmed testosterone-enhancing and ergogenic properties. Tongkat ali is particularly effective in men with late-onset hypogonadism or stress-related testosterone suppression.
Indications
- Testosterone support and optimization
- Male sexual function and libido
- Stress-related hormonal balance
- Body composition and lean mass support
- Ergogenic performance enhancement
Mechanism of Action
Eurypeptides stimulate Leydig cell testosterone production and inhibit aromatase conversion to estrogen
Dosing
| Compound | Dose | Frequency | Notes |
|---|---|---|---|
| Tongkat Ali (Eurycoma longifolia) | 400 mg | Once daily (morning) | Standardized extract (e.g., LJ100 or Physta); cycle 8-12 weeks |
Safety & Contraindications
- Generally well tolerated in clinical trials up to 600 mg/day
- Insomnia and restlessness possible; take in the morning
- Adulteration and contamination common in low-quality products; use verified sources
- Cycle 8-12 weeks on, 2-4 weeks off
- Not recommended for hormone-sensitive cancers without medical guidance