Saw Palmetto for Female Pattern Hair Loss

Q: Does Saw Palmetto help with Female Pattern Hair Loss?

Based on 3 studies with 120 participants, there is moderate evidence from clinical studies that Saw Palmetto may support Female Pattern Hair Loss management. Our evidence grade is B (Good Evidence).

Q: How much Saw Palmetto should I take for Female Pattern Hair Loss?

Studies have used various dosages. A commonly studied range is 320 mg/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of Saw Palmetto?

Reported side effects may include Mild gastrointestinal upset (nausea, diarrhea), Headache, Dizziness, Rare: decreased libido. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

Q: How strong is the evidence for Saw Palmetto and Female Pattern Hair Loss?

We rate the evidence as Grade B (Good Evidence). This rating is based on 3 peer-reviewed studies with 120 total participants. The overall direction of effect is positive.

Based on 3 studies (2 RCTs) with 120 total participants. 3/3 studies show positive effects.

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The Bottom Line

Early clinical trial evidence suggests that saw palmetto may help promote hair growth in women with pattern hair loss, but the research is still limited to a small number of studies.

All 3 studies show positive effects, including 2 RCTs
Improvements seen at both 90 and 180 days of use
Only 120 total participants — small evidence base
More research with different formulations is needed to confirm broad applicability

Key Study Findings

randomized controlled trial n=60 26 weeks Double-blind

The Safety and Efficacy of a Novel Saw Palmetto (Serenoa repens) Extract for Promoting Hair …

Dose: proprietary saw palmetto (Serenoa repens) bioactive fatty acid extract (SEREVELLE) daily; dose not s vs: Placebo Effect: terminal hair count: +18.6 vs -10.1 (283% greater); vellus hair: +6.6 vs -2.1 (414% greater); hair d <0.001 (terminal hair, density

narrative review

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.

Dose: None vs: Placebo Effect: None None

randomized controlled trial n=60 12.9 weeks Double-blind

The Safety and Efficacy of a Proprietary Bioactive Fatty Acids Extract From Saw Palmetto (Serenoa …

Dose: Proprietary saw palmetto (Serenoa repens) bioactive fatty acids extract, 1 oral dose daily for 90 da vs: Placebo Effect: Active group: anterior terminal hair count p<0.0007 vs baseline; significant vs placebo anterior p<0 0.0007

Key Statistics

Studies

120

Participants

↑

Positive

Grade

Referenced Papers

The Safety and Efficacy of a Novel Saw Palmetto (Serenoa repens) Extract for Promoting Hair Growth in Adults With Self-Perceived … RCT

Journal of cosmetic … 2026

The Safety and Efficacy of a Proprietary Bioactive Fatty Acids Extract From Saw Palmetto (Serenoa repens) for Promoting Hair Growth … RCT

Journal of cosmetic … 2025 1 citations

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions. Review

Journal of drugs … 2025

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

general:: 320 mg/day
hairloss:: 320 mg/day standardized extract

Upper limit: Not established

Dosages Studied in Research

Dosage	Duration	Effect	N
proprietary saw palmetto (Serenoa repens) bioactive fatty acid extract (SEREVELLE) daily; dose not s	26 weeks	Positive	60
None	--	Positive	--
Proprietary saw palmetto (Serenoa repens) bioactive fatty acids extract, 1 oral dose daily for 90 da	12.9 weeks	Positive	60

Best taken: With meals to reduce gastrointestinal side effects

Safety & Side Effects

Reported Side Effects

⚠ Mild gastrointestinal upset (nausea, diarrhea)
⚠ Headache
⚠ Dizziness
⚠ Rare: decreased libido

Known Interactions

● Anticoagulants and antiplatelet drugs (may increase bleeding risk)
● Oral contraceptives and hormone replacement therapy (anti-androgenic effects)
● Finasteride and dutasteride (additive 5-alpha-reductase inhibition)

Tolerable upper intake: Not established

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Saw Palmetto help with Female Pattern Hair Loss?

Based on 3 studies with 120 participants, there is moderate evidence from clinical studies that Saw Palmetto may support Female Pattern Hair Loss management. Our evidence grade is B (Good Evidence).

How much Saw Palmetto should I take for Female Pattern Hair Loss?

Studies have used various dosages. A commonly studied range is 320 mg/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Saw Palmetto?

Reported side effects may include Mild gastrointestinal upset (nausea, diarrhea), Headache, Dizziness, Rare: decreased libido. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Saw Palmetto and Female Pattern Hair Loss?

We rate the evidence as Grade B (Good Evidence). This rating is based on 3 peer-reviewed studies with 120 total participants. The overall direction of effect is positive.

Related Evidence

Other ingredients for Female Pattern Hair Loss

Minoxidil A Spironolactone A Vitamin D A Low-Level Laser Therapy A Nutrafol A

Saw Palmetto for other conditions

Androgenetic Alopecia A

Quick Verdict

Based on 3 studies (2 RCTs) with 120 total participants. 3/3 studies show positive effects.

Evidence Strength72%

High confidence

Study Breakdown

RCT (2)Meta (0)Other (1)

Compare Alternatives

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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.