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Types of Saw Palmetto: Forms & Bioavailability

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Liposterolic Extract (CO2 or hexane extracted)HighClinical applications — this is the form used in the majority of clinical trials; standardized to 85-95% fatty acids and sterols
Whole Berry PowderLow-ModerateGeneral wellness — less concentrated than standardized extracts; lower active compound content
Saw Palmetto Oil (Supercritical Extract)HighSoftgel form — supercritical CO2 extraction preserves the full fatty acid and phytosterol profile

Liposterolic Extract (CO2 or hexane extracted)

Bioavailability: High. Best for: Clinical applications — this is the form used in the majority of clinical trials; standardized to 85-95% fatty acids and sterols.

Whole Berry Powder

Bioavailability: Low-Moderate. Best for: General wellness — less concentrated than standardized extracts; lower active compound content.

Saw Palmetto Oil (Supercritical Extract)

Bioavailability: High. Best for: Softgel form — supercritical CO2 extraction preserves the full fatty acid and phytosterol profile.

Find the best Saw Palmetto for your needs
Ranked by form, bioavailability, and value
Full Saw Palmetto Guide

References

  1. Meta-analysisTacklind J, Macdonald R, Rutks I, Stanke JU, Wilt TJ (2012). Serenoa repens for benign prostatic hyperplasia. Cochrane Database of Systematic Reviews. DOI PubMed
  2. RCTBarry MJ, Meleth S, Lee JY, et al. (2011). Effect of increasing doses of saw palmetto extract on lower urinary tract symptoms: a randomized trial. JAMA. DOI PubMed
  3. Ernst E (2002). The risk-benefit profile of commonly used herbal therapies: Ginkgo, St. John's Wort, Ginseng, Echinacea, Saw Palmetto, and Kava.. Annals of internal medicine. DOI PubMed
  4. Meta-analysisWilt TJ, Ishani A, Stark G, MacDonald R, et al. (1998). Saw palmetto extracts for treatment of benign prostatic hyperplasia: a systematic review.. JAMA. DOI PubMed
  5. ReviewAgbabiaka TB, Pittler MH, Wider B, Ernst E (2009). Serenoa repens (saw palmetto): a systematic review of adverse events.. Drug safety. DOI PubMed
  6. Ulbricht C, Basch E, Bent S, Boon H, et al. (2006). Evidence-based systematic review of saw palmetto by the Natural Standard Research Collaboration.. Journal of the Society for Integrative Oncology. DOI PubMed
  7. Kimura M, Ishii I, Baba A, Takara T (2025). Beneficial effects of saw palmetto (Serenoa repens) fruit extract on the urinary symptoms of healthy Japanese adults with possible lower urinary tract symptoms: A randomized, double-blind, placebo-controlled study.. Nutrition and health. DOI PubMed
Show 3 more references
  1. Zhou L, Zhu W, Chen Y (2025). Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis.. Frontiers in nutrition. DOI PubMed
  2. Yamada S, Shirai M, Ono K, Kageyama S (2022). Beneficial Effects of Saw Palmetto Fruit Extract on Urinary Symptoms in Japanese Female Subjects by a Multicenter, Randomized, Double-Blind, Placebo-Controlled Study.. Nutrients. DOI PubMed
  3. ReviewEvron E, Juhasz M, Babadjouni A, Mesinkovska NA (2020). Natural Hair Supplement: Friend or Foe? Saw Palmetto, a Systematic Review in Alopecia.. Skin appendage disorders. DOI PubMed