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Fatty Acid

Cod Liver Oil

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Cod Liver Oil. Traditional A, D, omega-3 source.

How it works. Combined vitamins A, D, EPA/DHA.

What the research supports. 1 graded claims. Strongest: Multiple support (moderate).

How much to take. Typical dose: 5–10 mL.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

Common forms. Available as Capsule or softgel, Powder, Sublingual or buccal, Liposomal liquid.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Cod Liver Oil. Anecdotes are not medical advice.

Cod Liver Oil. Traditional A, D, omega-3 source.

Key compound: docosahexaenoic acidC22H32O2 · 328.5 g/mol

What it is

Traditional A, D, omega-3 source.

Food sources

Endogenously produced or biosynthesized moleculeStandardized pharmaceutical- or food-grade supplementCombined with cofactors that improve absorption or activity

Goals

General WellnessBone Health

How it works

Combined vitamins A, D, EPA/DHA.

Pathways

  • Combined vitamins A, D, EPA/DHA

Effects

  • +Multiple support supports

What the research supports

Multiple supportmoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
5–10 mL
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the capsule or softgel form.
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Side effects & interactions

Common side effects

  • Vitamin A toxicity risk

Medication interactions

Prescription medications (general)minor

Always disclose Cod Liver Oil use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

  • Capsule or softgel
  • Powder
  • Sublingual or buccal
  • Liposomal liquid

Key studies

8 studies cited in total.

PubMed: Cod Liver Oil — Multiple support ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Cod Liver Oil and "Multiple support". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Cod Liver Oil — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

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

PubMed: Cod Liver Oil — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

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

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