People mainly take Tongkat Ali for libido, hormones, energy. Based on 282 first-hand reports and 7 meta-analyses & systematic reviews in the medical literature. Ranked #199 of 1,974 overall.
Of reports that state an outcome, 58% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: longifolia supplementation for enhancing testosterone production. Although more research is required before its use in clinical practice, this may represent a safe and promising therapeutic option, particularly in hypogonadal men.
PubMed 36013514 ↗Conclusion: The exceptions were β-hydroxy β-methylbutyrate and betaine, which can be considered effective for male athletes. Eurycoma longifolia, a blend of Punica granatum fruit rind and Theobroma cacao seed extracts (Tesnor™) and purified Shilajit extract (PrimaVie™) can be considered possibly effective for men with late-onset hypogonadism; Eurycoma longifolia and Withania somnifera possibly effective for healthy men; and a non-hormonal aromatase inhibitor (Novadex XT™) possibly effective for male athletes.
PubMed 37697053 ↗Conclusion: Based on current evidence, the herbal extract of Tongkat Ali may have clinical effect on erectile function. However, more efficacy trials are warranted to further support current evidence.
PubMed 26365449 ↗Conclusion: Overall, 69% of ingredients in testosterone supplements and 52% of ingredients in ED supplements have published RCT evidence. Many male supplements claim to improve testosterone or ED parameters; however, there is limited evidence, which should be considered when counseling patients.
PubMed 32358510 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“tongkat ali keeps testosterone levels in check”
“First I’ve heard of tongkat Ali honestly but you’ve got me intrigued”
“maybe tongkat ali but only for short periods of time then it stops working.”
“Most profound thing I have ever felt for this was Tongkat Ali (Longjax).”
“Following that time, I developed many symptoms of pretty serious heavy metal toxicity.”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate