Fatty Acid

Wild Cod Liver Oil

Also known as: cod liver oil, CLO, gadidae oil

Evidence

A nutrient-dense oil from wild Atlantic cod (Gadus morhua) livers, naturally rich in EPA, DHA, vitamin A, and vitamin D3. Traditionally used for joint health and immune support.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

omega-3 supplementation
joint and bone support
immune function
vision and skin health

How it works

provides preformed EPA/DHA reducing need for conversion
supplies fat-soluble vitamins (A and D3)
reduces systemic inflammation through omega-3 content
supports membrane integrity

Dosage

Typical range: 1-3 grams daily of cod liver oil (providing 180-540 mg EPA and 120-360 mg DHA approximately)
Timing: with meals containing additional fat for optimal absorption
With food: recommended to reduce GI upset and improve absorption
Duration: safe for long-term continuous use; fat-soluble vitamins accumulate over time
Special populations: pregnant women should verify vitamin A content does not exceed safe limits; individuals on anticoagulants should monitor intake

Forms

liquid oil· 70/100
capsules· 70/100
softgels· 70/100

Safety

Common side effects

fishy aftertaste
mild GI upset
nausea (especially on empty stomach)

Contraindications

allergy to fish or shellfish
bleeding disorders (high-dose)
scheduled surgery (may increase bleeding risk)

Products containing Wild Cod Liver Oil

Top-scoring supplements in our catalog that list Wild Cod Liver Oil on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Nutricost

Cod Liver Oil

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Evidence notes

Cod liver oil has good clinical evidence for omega-3 and vitamin benefits, though newer purified fish oils have more extensive RCT data. Traditional use and composition well-documented.

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.