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HORMONAL SUPPORT

Tongkat Ali (Eurycoma)

Testosterone · libido · stress resilience

MODERATE EVIDENCEVEGANREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Last reviewed: May 30, 2026
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Tongkat Ali: Testosterone · libido · stress resilience. Malaysian botanical that supports free testosterone, libido, and HPA-axis recovery from stress. Best results in men over 35. Standard dose 400 mg standardised, taken in the morning, about $28/month. Evidence rating: moderate evidence.

What is Tongkat Ali?

Tongkat Ali (Eurycoma longifolia, also called Longjack) is a Southeast Asian flowering plant with a long history of use in Malaysian traditional medicine. Standardized extracts, particularly the patented Physta and LJ100 forms, have been studied for their effects on free testosterone, libido, sexual function, body composition, and stress resilience. Tongkat Ali appears to work by lowering sex hormone binding globulin (SHBG), thereby increasing the proportion of bioavailable testosterone, and by gently down-regulating cortisol under chronic stress. Most studies use 200-400 mg per day of a standardized extract over 8-12 weeks. Cycling on and off is commonly recommended.

WHY IT MATTERS

Malaysian botanical that supports free testosterone, libido, and HPA-axis recovery from stress. Best results in men over 35.

Where to buy

Double Wood Tongkat Ali 400mg
RECOMMENDED
Double Wood, Tongkat Ali
400 mg standardised · Morning · ~$28/month

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Common questions

What is Tongkat Ali?
Tongkat Ali (Eurycoma longifolia, also called Longjack) is a Southeast Asian flowering plant with a long history of use in Malaysian traditional medicine. Standardized extracts, particularly the patented Physta and LJ100 forms, have been studied for their effects on free testosterone, libido, sexual function, body composition, and stress resilience. Tongkat Ali appears to work by lowering sex hormone binding globulin (SHBG), thereby increasing the proportion of bioavailable testosterone, and by gently down-regulating cortisol under chronic stress. Most studies use 200-400 mg per day of a standardized extract over 8-12 weeks. Cycling on and off is commonly recommended.
What is Tongkat Ali used for?
Testosterone · libido · stress resilience. Malaysian botanical that supports free testosterone, libido, and HPA-axis recovery from stress. Best results in men over 35.
What is the standard dose of Tongkat Ali?
400 mg standardised, typically taken in the morning. Approximate cost is $28 per month.
Who should avoid Tongkat Ali?
Use extra caution, and speak to a clinician first, if you are pregnant or nursing.
How strong is the evidence for Tongkat Ali?
Moderate evidence for its primary uses. See the full study list on the research page.

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