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evidence · mechanism · dose
Supplements/Compound

Marine Collagen Peptides

Hydrolyzed fish collagen — supplies glycine, proline, and bioactive di/tripeptides for skin and hair.

Hair SupportSkin, Hair & NailsJoint & Connective Tissue

Overview

Hydrolyzed fish collagen — supplies glycine, proline, and bioactive di/tripeptides for skin and hair.

Natural sources
    Common forms

      Mechanism of action

      Di/tripeptides (Pro-Hyp, Hyp-Gly) reach dermis and stimulate fibroblast ECM synthesis.

      Pathways
      • · Fibroblast signaling
      • · Amino acid pool for keratin

      Effects on the body

      Organ system effects

      Evidence-based benefits

      Improved skin hydration and elasticity (meta-analysis)

      Moderate evidence

      Increased hair thickness in small trials

      Limited evidence

      Potential side effects

      Common
        Rare
        • · Fish allergy
        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
          5–10 g
          With food?
          Optional

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

          Scientific evidence (9)

          RCTNutrients · 2019

          Oral collagen peptides on skin and joint outcomes

          Bolke L, et al.

          12-week RCT of collagen peptides 2.5 g/d.

          Key findings

          Significant improvement in skin elasticity and joint comfort.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — Improved skin hydration and elasticity

          Live PubMed search

          Live results for "Marine Collagen Peptides Improved skin hydration and elasticity" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Marine Collagen Peptides and "Improved skin hydration and elasticity". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — Increased hair thickness in small trials

          Live PubMed search

          Live results for "Marine Collagen Peptides Increased hair thickness in small trials" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Marine Collagen Peptides and "Increased hair thickness in small trials". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — randomized controlled trial

          Live PubMed search

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

          Key findings

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

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — meta-analysis

          Live PubMed search

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

          Key findings

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

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — pharmacokinetics

          Live PubMed search

          Live results for "Marine Collagen Peptides pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

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

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — safety adverse events

          Live PubMed search

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

          Key findings

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

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Marine Collagen Peptides — dose response

          Live PubMed search

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

          Key findings

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

          Open study
          Systematic reviewGoogle Scholar · 1970

          Google Scholar: Marine Collagen Peptides — clinical evidence

          Live Scholar search

          Cross-database citation index for Marine Collagen Peptides 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.