Saw Palmetto
Commonly used for
Healthy AgingUrinary Health
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The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Saw palmetto appears to influence androgen metabolism and may reduce urinary symptoms in some men with BPH. Evidence is mixed and benefits are generally modest compared with prescription medications.
How is it used? / Administration
Form: Lipidosterolic extract of Serenoa repens standardized to 85–95% fatty acids and sterols
Typical dose studied: 320 mg/day (or 160 mg twice daily)
Timing: With food
Use standardized lipid extracts only. Evidence does not support use for prostate cancer prevention.
How well does it work? / Evidence
~ Moderate evidence
Who should avoid it?
Interacts with: Anticoagulants and antiplatelet medications; Hormonal therapies
Already taking it? Reassess symptom improvement after 3–6 months. New or worsening urinary symptoms should be medically evaluated to rule out prostate cancer before assuming they're simply BPH -- saw palmetto isn't a substitute for that evaluation.
Research & references
Barry MJ et al. (2011). Saw palmetto and lower urinary tract symptoms RCT. JAMA. Tacklind J et al. (2012). Serenoa repens for BPH. Cochrane Database. American Urological Association BPH Guidelines.
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