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evidence · mechanism · dose
Supplements/Compound

Fucoxanthin

aka Brown seaweed extract

Brown seaweed carotenoid studied for visceral fat reduction.

Fat Loss

Overview

Brown seaweed carotenoid studied for visceral fat reduction.

Natural sources
  • Undaria pinnatifida
  • Hijiki
Common forms
  • Brown seaweed extract

Mechanism of action

Upregulates UCP1 in white adipose tissue, increasing thermogenesis.

Pathways
  • · UCP1 ↑

Effects on the body

Increases
Thermogenesis
Decreases
Visceral fat

Organ system effects

Evidence-based benefits

Modest visceral fat reduction in obese women

Limited evidence

Potential side effects

Common
    Rare
      Serious

        Drug interactions

        No notable interactions reported.

        Supplement interactions

        Pairs well with

        None listed.

        Avoid combining with

        No specific avoidances listed.

        Dosing & bioavailability

        Typical dose
        2.4–8 mg/d

        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.

        Compound
        Fucoxanthin
        Amazon
        Wide selection · fast shipping
        Compound
        Fucoxanthin
        iHerb
        Global delivery · curated brands
        Compound
        Fucoxanthin
        Thorne
        Practitioner-grade · NSF tested

        Scientific evidence (8)

        RCTDiabetes Obes Metab · 2010

        Xanthigen (fucoxanthin + pomegranate) for weight loss

        Abidov M, et al.

        16-week RCT in obese women.

        Key findings

        Significant weight and body-fat reduction.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — Modest visceral fat reduction in obese women

        Live PubMed search

        Live results for "Fucoxanthin Modest visceral fat reduction in obese women" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

        Opens current human and preclinical literature matching Fucoxanthin and "Modest visceral fat reduction in obese women". Filter by RCT, meta-analysis, or year on the results page.

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — randomized controlled trial

        Live PubMed search

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

        Key findings

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

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — meta-analysis

        Live PubMed search

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

        Key findings

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

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — pharmacokinetics

        Live PubMed search

        Live results for "Fucoxanthin pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

        Key findings

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

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — safety adverse events

        Live PubMed search

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

        Key findings

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

        Open study
        Systematic reviewPubMed (NLM) · 1970

        PubMed: Fucoxanthin — dose response

        Live PubMed search

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

        Key findings

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

        Open study
        Systematic reviewGoogle Scholar · 1970

        Google Scholar: Fucoxanthin — clinical evidence

        Live Scholar search

        Cross-database citation index for Fucoxanthin 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.