Tongkat Ali

    Written by:
    Brady Holmer, Louie Neri

    Fact-checked

    by:

    Peter Woznik, Nick Milazzo
    Last Updated: September 4, 2025

    Tongkat ali, also known as Eurycoma longifolia, is known for its aphrodisiac and profertility effects. It’s also promoted as a “testosterone booster”, and while some evidence exists for this effect in men with low testosterone and the mechanisms are plausible, the data aren’t convincing.

    Overview

    Dosage Information

    The standard dosage of tongkat ali for testosterone is 100–600 mg/day. For sexual health and libido, a daily dose of 200–400 mg seems to be effective, which may be divided into 1–2 doses per day, although it’s not known whether one of these dosing regimens is more effective.

    Tongkat ali is typically administered orally in the form of a standardized water-soluble extract.

    Frequently Asked Questions

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    Research Breakdown