Supplement analysis backed by scientific evidence · PT

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Moderate evidenceMen's health

Pygeum

Bark extract of the African cherry, one of the better-studied prostate herbs: pooled trials show men are about twice as likely to report symptom improvement, with roughly 19% less nocturia and 23% higher peak urine flow. The catch is that nearly all trials were small, short (about two months), and predate modern reporting standards.

What the science says

  • Reduces BPH urinary symptoms Moderate evidence

    A quantitative meta-analysis of 18 randomised trials in 1562 men found those on Pygeum africanum were about twice as likely to report overall symptom improvement than placebo (RR ~2.1), with nocturia reduced by roughly 19% and residual urine volume by roughly 24%. The Cochrane review reached the same conclusion but flagged that the trials averaged only 64 days and used inconsistent, mostly non-validated symptom scales.

  • Improves urinary flow rate Moderate evidence

    Peak urine flow increased by about 23% versus placebo across pooled trials — a real but modest change, and smaller than what is typically achieved with an alpha-blocker such as tamsulosin. No trial has compared pygeum head-to-head against standard BPH drugs over a clinically meaningful duration.

  • Shrinks the prostate or lowers PSA Limited evidence

    There is no evidence that pygeum reduces prostate volume or PSA. Its proposed mechanisms — anti-inflammatory phytosterols, ferulic esters affecting growth factors, pentacyclic triterpenes — act on symptoms and bladder function rather than on gland size, and it does not alter the disease course.

Dosage & safety

Studied doseTrials used 75-200 mg/day of a standardised lipophilic bark extract (typically the Tadenan-type preparation standardised to about 13-14% total sterols), most commonly 100 mg/day or 50 mg twice daily, for 4-16 weeks. Cheaper products sold as "pygeum bark powder" rather than a standardised lipid extract have not been tested and should not be assumed equivalent.
SafetyAdverse events in trials were mild and not significantly different from placebo; GI upset (nausea, abdominal pain, diarrhoea) is the main complaint, reported in roughly 1 in 20 users. It does not appear to affect PSA, which matters — but this cuts both ways: a herb that relieves symptoms without lowering PSA does not mask prostate cancer, yet also does not treat it. Any man with new or worsening urinary symptoms, haematuria, or a rising PSA needs a urological assessment before self-treating. Conservation is a genuine issue: Prunus africana is listed on CITES Appendix II because of over-harvesting for the supplement trade, and sustainably sourced or cultivated material is the responsible choice. No significant drug interactions are documented, but data are thin.

Scientific references

Where to buy

Nutricost, Pygeum, 120 Capsules (500 mg per Capsule)

View on iHerb

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