Best Cod Liver Oil Supplements 2026: Cost per Effective Dose
Top pick for Cod Liver Oil: NOW Foods Cod Liver Oil, 650mg, 250 Softgels — 650mg cod liver oil (softgel size) per 1 softgel, None claimed, $0.05/day.
All Cod Liver Oil Supplements Compared
All 5 products sorted by cost per clinically-effective daily dose (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods Cod Liver Oil, 650mg, 250 Softgels | NOW Foods | 650mg cod liver oil (softgel size) / 1 softgel | $0.05 | None claimed | Buy | |
| NOW Foods Cod Liver Oil Extra Strength, 1,000mg, 180 Softgels | NOW Foods | 1000mg cod liver oil (softgel size) / 1 softgel | $0.10 | None claimed | Buy | |
| Nordic Naturals Arctic Cod Liver Oil, Lemon, 180 Softgels | Nordic Naturals | 750mg cod liver oil (softgel size) / 2 softgels | $0.47 | None claimed | Buy | |
| Carlson Norwegian Cod Liver Oil, Lemon, 500mL | Carlson | 1100mg cod liver oil (softgel size) / 1 tsp (5mL) | $0.59 | None claimed | Buy | |
| Carlson Norwegian Cod Liver Oil, Lemon, 250mL | Carlson | 1100mg cod liver oil (softgel size) / 1 tsp (5mL) | $0.66 | None claimed | Buy |
In-Depth Cod Liver Oil Guides
Go deeper on cod liver oil — by goal, by form, and what the evidence actually supports:
Our Picks
Lowest Cost: NOW Foods Cod Liver Oil, 650mg, 250 Softgels
650mg cod liver oil (softgel size) per 1 softgel. None claimed. $0.05/day. 250 servings per container at $13.46.
How We Rank Cod Liver Oil Supplements
Every product is evaluated on three criteria:
- Cost per day. Not cost per pill or cost per bottle — what it actually costs per day at the product's labelled serving. Where a category's servings differ in strength we flag it above the table, because cost per day is only comparable when the doses are.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your Cod Liver Oil Choice
Not sure which cod liver oil supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting cod liver oil metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking cod liver oil? Check if you have the right form and dose.
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