Outcome
    Limited
    Effectiveness 2/5

    Tongkat Ali for Erectile Function

    Tongkat ali shows small testosterone and stress-hormone benefits in some trials, which may indirectly help libido, but direct evidence for erectile function is weak.

    Overview

    Tongkat ali shows small testosterone and stress-hormone benefits in some trials, which may indirectly help libido, but direct evidence for erectile function is weak.

    Verdict

    Insufficient evidence

    Interesting for libido and stress; erectile-specific evidence is insufficient.

    How It Works

    Eurycomanone and quassinoids may reduce SHBG and cortisol and modestly raise free testosterone in stressed or aging men; downstream effects on libido are plausible, direct ED effects unproven.

    Dosing & Protocol

    Typical dose

    Recommended dose
    200–400 mg/day standardized extract
    Expected timeframe
    4–8 weeks for libido/energy; erectile effects uncertain.

    Protocol

    dose
    200–400 mg
    notes
    Use third-party-tested products (heavy metal contamination reported in some brands).
    timing
    morning
    duration
    cycle 8–12 weeks on, 2–4 off

    Evidence

    What the studies say

    Small RCTs show improved stress hormones, mood, and testosterone in specific populations. ED-specific trials are few, small, and industry-linked. Libido effects are more consistent than erectile effects.

    A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali) and concurrent training on erectile function and testosterone levels in androgen deficiency of aging males (ADAM)

    Score: 6/10
    2021
    rct
    n=45

    Leitao AE, Vieira MCS, Pelegrini A +2 more

    Eurycoma longifolia with concurrent training improved erectile function and testosterone over six months

    View source

    Efficacy of Tongkat Ali (Eurycoma longifolia) on erectile function improvement: systematic review and meta-analysis of randomized controlled trials

    Score: 6/10
    2022
    meta_analysis

    Leisegang K, Sengupta P, Agarwal A +1 more

    Pooled analysis of randomised trials of Eurycoma longifolia (Tongkat Ali) found small improvements in erectile function scores and some testosterone-related parameters versus placebo, but effects were inconsistent across trials and largely limited to men with baseline hypogonadism or stress-related low testosterone.

    View source

    Safety

    Caveats

    Quality control varies widely. Avoid in hormone-sensitive conditions.

    Less likely to help if

    Men with normal testosterone expecting a direct ED fix; those with significant vascular ED.

    Medical Disclaimer

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    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.