Tongkat Ali
Southeast Asian herb (Eurycoma longifolia); modest evidence for testosterone support & stress reduction in men.
hormonesstrengthlibidolongevity
Evidence last reviewed: 04 Apr 2026
Trade-offs & context
Known concerns, timing considerations, & interactions
Sleep
May exacerbate anxiety or sleep disruption in sensitive individuals due to mild androgen elevation
Note
Heavy metal (mercury) contamination reported in some Malaysian products — choose third-party tested sources
Dot colour: ●High concern ●Moderate ● Low / note
Biomarkers studied
Outcomes directly measured across the evidence records below
Hormonal
Testosterone
Evidence
2 records
New outcome
— • —
PUBMEDVery low
Dose: —
Citation: —
Testosterone / sexual function
Aging men; men with late-onset hypogonadism • RCTs (several)
PUBMEDModerate
Consistent but modest free testosterone increase (~15–40%); libido improvements in most trials.
Dose: 200 mgDuration: 4–12 weeks
Citation: Tambi et al. 2012; Leisegang et al. 2021
Most evidence in men over 40 or those with suboptimal T levels.
Forms
Standardised root extract (100:1 or 200:1)
LJ100 and Physta are studied commercial extracts.
Stacks containing Tongkat Ali
Public community stacks that include this ingredient.
hormonalmens-healthlibido
Hormonal Balance for Men
by@athlete
This stack combines tongkat ali & boron to support hormonal balance & enhance libido in men. Tongkat ali is known for its testosterone-boosting effects, while boron supports testosterone metabolism & bone health.
Tongkat Ali
200mg
Boron
6mg
New