ingestible · for men's health & vitality
Saw Palmetto
Reviewed by the Nimbera editorial team · Last updated May 2026
How to use
If choosing to try despite limited evidence: take 160 mg of liposterolic extract (standardised to 85-95% fatty acids and sterols) twice daily with food, or 320 mg once daily. Allow 3-6 months to assess any effect. Purchase only standardised liposterolic extracts - teas and non-standardised products have not been studied.
How it works
Saw palmetto berries contain fatty acids and phytosterols (especially beta-sitosterol) proposed to inhibit 5-alpha-reductase, the enzyme that converts testosterone to dihydrotestosterone (DHT). DHT stimulates prostate cell growth, so theoretically inhibiting this conversion could reduce prostate enlargement - however, clinical studies have not shown this mechanism to translate into measurable symptom improvement.
Where to buy
Nature's Way Saw Palmetto Standardized (iHerb, Amazon), Jarrow Formulas Saw Palmetto (iHerb, Whole Foods), NOW Foods Saw Palmetto Extract (Amazon, Walmart).
Typical cost: $15-$30 per month
Safety notes
Generally well-tolerated with mild digestive side effects. Does not appear to affect PSA (prostate-specific antigen) levels, which is important for prostate cancer screening accuracy. May interact with blood thinners (anticoagulants/antiplatelets). Men with significant BPH symptoms should see a doctor rather than rely on this supplement.
Drug & supplement interactions
- Always tell your doctor or pharmacist about any supplements you take.
- Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
- Herbal remedies can affect how the body absorbs or metabolises drugs.
- Check drugs.com interactions checker before starting.
This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.