Quick answer: Small human trials with about 200 mg a day of standardized Tongkat Ali extract reported improved testosterone in men with low levels and lower stress hormones in stressed adults.
What it is
A root from Southeast Asia, traditionally used as a men's tonic.
What trials found
In men with late-onset hypogonadism, 200 mg a day for a month improved testosterone levels (Tambi 2012). In moderately stressed adults, it lowered cortisol and improved mood (Talbott 2013). Studies are small and often industry-linked.
Safety
Generally well tolerated in trials. Men on hormone therapy or with hormone-sensitive conditions should ask a doctor.
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General information, not medical advice. HoneyPower is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease.