This cod liver oil and fish oil blend gives you roughly 120mg of combined **omega-3s** (EPA plus DHA) per capsule — below the 250–500mg typically used for general maintenance, and well under the ~1,000mg studied for heart health. If omega-3 is your main goal, one capsule a day leaves you short of the doses linked to clinical benefit.
The 525mg blend pairs 268mg of cod liver oil with concentrated fish oil and adds 4mcg (160 IU) of **Vitamin D** — about a sixth of the 1,000 IU clinical starting point. Cod liver oil has long been used as a source of vitamins A and D alongside its omega-3s, so think of this as an A-plus-D-plus-omega supplement rather than a dedicated omega-3 product.
Here's the real constraint with cod liver oil: its natural **Vitamin A** sets the ceiling. Vitamin A is fat-soluble and accumulates in your body, so you can't simply take extra capsules to reach a meaningful omega-3 dose without pushing vitamin A too high — a particular concern in pregnancy. It works as a traditional A and D source, but it's an inefficient way to hit a clinically useful omega-3 dose.
BioStacks
Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.
Best for
Ingredients (2)
Vitamin D
16%Dose
160 IU
Target
1000–5000 IU
Form
Not listed
Cod Liver Oil
9%Dose
268 mg
Target
3000–6000 mg
Form
—
Other Ingredients (5)
Cod Liver OilCarrier Oil
Purified cod liver oil used as an omega-3 carrier base in softgel/liquid formulations
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
Fish Oil, PurifiedLipid Base
Purified oil from fish used as a carrier and lipid base in omega-3 and fat-soluble supplements
CholecalciferolVitamin
Vitamin D3 added in trace amounts for fortification in protein powders and other supplements
Mixed TocopherolsAntioxidant
Natural vitamin E used as preservative
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.