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evidence · mechanism · dose
Supplements/Herb

Topical Saw Palmetto

Topical lotion form for androgenetic alopecia.

Men's Health

Overview

Topical lotion form for androgenetic alopecia.

Natural sources
    Common forms

      Forms & variants of Saw Palmetto

      Different chemical forms of Saw Palmetto behave differently. Browse each form's mechanism, bioavailability, and best-use context.

      Parent
      Saw Palmetto

      Lipidosterolic extract used for BPH urinary symptoms.

      Parent
      Saw Palmetto

      5α-reductase-inhibiting berry extract — used for BPH and androgenic hair loss.

      Mechanism of action

      Inhibits 5α-reductase locally at the follicle.

      Pathways

        Effects on the body

        Organ system effects

        Evidence-based benefits

        Modest hair density improvement

        Limited evidence

        Potential side effects

        Common
        • · Scalp irritation
        Rare
          Serious

            Drug interactions

            No notable interactions reported.

            Safety & non-supplemental interactions

            Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

            Avoid if you are
            • ·Pregnant or breastfeeding (insufficient safety data)
            • ·Children under 18 (unless directed by a clinician)

            Supplement interactions

            Pairs well with

            None listed.

            Avoid combining with

            No specific avoidances listed.

            Dosing & bioavailability

            Typical dose
            Lotion 2–5% bid

            Where to buy

            Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

            Herb
            Topical Saw …
            Amazon
            Wide selection · fast shipping
            Herb
            Topical Saw …
            iHerb
            Global delivery · curated brands
            Herb
            Topical Saw …
            Thorne
            Practitioner-grade · NSF tested

            Scientific evidence (8)

            RCTAustralas J Dermatol · 2016

            Topical saw palmetto vs minoxidil 2%

            Wessagowit V, et al.

            24-week study in 50 men with AGA.

            Key findings

            Topical saw palmetto improved hair count, less than minoxidil.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — Modest hair density improvement

            Live PubMed search

            Live results for "Topical Saw Palmetto Modest hair density improvement" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "Modest hair density improvement". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — randomized controlled trial

            Live PubMed search

            Live results for "Topical Saw Palmetto randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — meta-analysis

            Live PubMed search

            Live results for "Topical Saw Palmetto meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — pharmacokinetics

            Live PubMed search

            Live results for "Topical Saw Palmetto pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — safety adverse events

            Live PubMed search

            Live results for "Topical Saw Palmetto safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Topical Saw Palmetto — dose response

            Live PubMed search

            Live results for "Topical Saw Palmetto dose response" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Topical Saw Palmetto and "dose response". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewGoogle Scholar · 1970

            Google Scholar: Topical Saw Palmetto — clinical evidence

            Live Scholar search

            Cross-database citation index for Topical Saw Palmetto as it relates to "clinical evidence".

            Key findings

            Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

            Open study
            Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.