Saw Palmetto Extract 45% (Serenoa repens) is standardised to 45% fatty acids — the most clinically validated concentration for benign prostatic hyperplasia (BPH) management and male hair loss prevention. The fatty acid-rich lipophilic extract inhibits 5-alpha-reductase (types I and II), reducing DHT conversion and prostatic tissue proliferation, making it the most widely used natural ingredient for men’s prostate and hair health.
Applications:
- Prostate health and BPH symptom management formulations
- Male hair loss and DHT-blocking supplement formulations
- Men’s hormonal health and testosterone support products
- Urinary health and flow rate improvement supplements
Key Features & Benefits:
- 45% fatty acids — standard clinical concentration for BPH evidence
- Dual 5-alpha-reductase inhibitor (type I and II)
- Reduces DHT — addresses both prostate growth and hair loss
- No animal substance – halal-certified
- Clinically studied in multiple RCTs for prostate symptom relief
What “45% fatty acids” means
Saw palmetto (Serenoa repens) berry extracts are lipophilic: mostly free fatty acids (lauric, oleic, myristic and others) with phytosterols such as beta-sitosterol. Liquid extracts made with supercritical CO2 or hexane are typically 85–95% fatty acids. Powders with a lower figure, such as 45%, are usually the liquid extract loaded onto a carrier, or a different extraction. Ask how the grade is made, what the carrier is, and how the fatty acids are measured (GC is standard).
Adulteration
Saw palmetto has a known adulteration problem. Cheaper oils rich in lauric acid, such as coconut or palm kernel oil, can be blended in because they mimic the main fatty acid. A full fatty acid profile and phytosterol results help detect this, because the ratios differ from authentic extract.
Studies cannot be borrowed
Much of the clinical research on saw palmetto used specific liquid extracts, and different extracts are not chemically equivalent. A powder grade should not be described with results from a different extract. A related ingredient in men’s formulas is Pumpkin Seed Extract.
What the research says
- A 2023 Cochrane review of 27 studies (4,656 men) found that saw palmetto alone results in little to no difference in urinary symptoms of benign prostatic enlargement compared with placebo, at 3–6 months and at 12–17 months (high-certainty evidence). Adverse events were similar to placebo. [1]
- A 2021 meta-analysis found no significant difference in sexual function between saw palmetto and placebo. [2]
These summaries describe published research on the ingredient. They are not claims for any finished product; claims on finished products must meet the rules of the market where they are sold.
References
- Franco JV, et al. Serenoa repens for the treatment of lower urinary tract symptoms due to benign prostatic enlargement. Cochrane Database Syst Rev. 2023;6(6):CD001423. doi:10.1002/14651858.CD001423.pub4
- Paulis G, et al. Serenoa repens and its effects on male sexual function. A systematic review and meta-analysis of clinical trials. Arch Ital Urol Androl. 2021;93(4):475–480. doi:10.4081/aiua.2021.4.475
What to ask for on the certificate of analysis
- Species, plant part (berry), extraction method (CO2, hexane, ethanol) and carrier
- Total fatty acids by GC, with the individual fatty acid profile
- Phytosterols (including beta-sitosterol)
- Residual solvents, if solvent-extracted
- Heavy metals and pesticide residues
- Microbiology and loss on drying
- Halal certificate, batch number, manufacture and retest dates
