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Swanson Premium Brand · Fat/Fatty Acid supplement

Double-Strength Cod Liver Oil

13 ingredients on file in the NIH Dietary Supplement Label Database, top 32% by ingredient count. Off-market, label data preserved for reference.

13
Ingredients
Top 32%
By ingredient count
5
Nutrient categories
Off Market by Swanson Premium Brand Verify with NIH DSLD → · FDA overview →

Double-Strength Cod Liver Oil is a fat/fatty acid supplement by Swanson Premium Brand in softgel capsule form, listing 13 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as off-market (no longer available for purchase, but label data is preserved). Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.

Product Details

Form
Softgel Capsule
Database Entry Date
2018-04-25
Ingredients
13

Supplement Facts (13 Ingredients)

Calories
Calories
Amount
Not disclosed on label
% DV
Not reported
Calories from Fat
Calories
Amount
Not disclosed on label
% DV
Not reported
Total Fat
Fat (unspecified)
Amount
Not disclosed on label
% DV
Not reported
Vitamin A
Vitamin A (unspecified)
Amount
Not disclosed on label
% DV
Not reported
Vitamin D
Vitamin D (unspecified)
Amount
Not disclosed on label
% DV
Not reported
ecoMarine Norwegian Cod Liver Oil
Cod Liver Oil
Amount
Not disclosed on label
% DV
Not reported
Total Omega-3 Fatty Acids
Omega-3
Amount
Not disclosed on label
% DV
Not reported
Eicosapentaenoic Acid
EPA (Eicosapentaenoic Acid)
Amount
Not disclosed on label
% DV
Not reported
Docosahexaenoic Acid
DHA (Docosahexaenoic Acid)
Amount
Not disclosed on label
% DV
Not reported
Other Omega-3 Fatty Acids
Omega-3
Amount
Not disclosed on label
% DV
Not reported
Gelatin
Gelatin
Amount
Not disclosed on label
% DV
Not reported
Glycerin
Glycerol
Amount
Not disclosed on label
% DV
Not reported
purified Water
Water
Amount
Not disclosed on label
% DV
Not reported

How does Double-Strength Cod Liver Oil compare?

Ingredients listed on each label, against the fat/fatty acid category average of 11.6. Data from the NIH DSLD.

Double-Strength Cod Liver Oil13
100% Natural Lecithin Granules10
Fat/Fatty Acid average11.6

Double-Strength Cod Liver Oil lists 3 ingredients more than 100% Natural Lecithin Granules. That is 1 above the fat/fatty acid average.

What the Label Data Shows

According to NIH DSLD label rows, Double-Strength Cod Liver Oil sits in the top 32% of products with a countable formula by declared ingredient count.

Double-Strength Cod Liver Oil is cataloged in the NIH Dietary Supplement Label Database (DSLD) as a fat/fatty acid supplement built from 13 ingredients from Swanson Premium Brand, sold in softgel capsule form. These ingredients span 5 nutrient categories, other, fatty acid, fat, vitamin, and 1 more, reflecting a multi-component formula rather than a single-nutrient product.

Across a broader 13-ingredient formula, 13 of 13 lack a percentage Daily Value in the available source record, leaving their regulatory reference status unspecified on this page.

Availability status shapes how this label record is best used. This product is currently listed as off-market in the DSLD, with its label first entered into the database on 2018-04-25. An off-market listing means production and distribution under this label have stopped, but the DSLD does not delete the entry, it stays on file for historical reference and formulation-history tracking.

About the DSLD database

The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for Double-Strength Cod Liver Oil: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.

Ingredient Breakdown by Category

other
4
Calories, Calories from Fat, Glycerin, +1 more
fatty acid
4
Total Omega-3 Fatty Acids, Eicosapentaenoic Acid, Docosahexaenoic Acid, +1 more
fat
2
Total Fat, ecoMarine Norwegian Cod Liver Oil
vitamin
2
Vitamin A, Vitamin D
protein
1
Gelatin

Daily Value Coverage

0
Above 100% DV
0
Below 100% DV
13
%DV not reported in source

Frequently Asked Questions

What ingredients are in Double-Strength Cod Liver Oil? ▼
Double-Strength Cod Liver Oil contains 13 ingredients. By declared ingredient count it sits in the top 32% of DSLD products PlainVitamins places. Ingredients span 5 categories: other, fatty acid, fat, vitamin, protein.
Who manufactures Double-Strength Cod Liver Oil? ▼
Double-Strength Cod Liver Oil is was manufactured by Swanson Premium Brand. It is classified as a Fat/Fatty Acid supplement in softgel capsule form.
Is Double-Strength Cod Liver Oil still available for purchase? ▼
According to the NIH DSLD database, Double-Strength Cod Liver Oil is listed as off-market and may no longer be available for purchase.
What is the serving size of Double-Strength Cod Liver Oil? ▼
The serving size is not specified.
What type of supplement is Double-Strength Cod Liver Oil? ▼
Double-Strength Cod Liver Oil is classified as a "Fat/Fatty Acid" supplement in the NIH database. This category includes products primarily composed of fat/fatty acid ingredients. Across the full DSLD catalog, products fall into 9 possible categories: Vitamin, Mineral, Botanical, Amino Acid & Protein, Non-Nutrient, Fat & Fatty Acid, Multi-Vitamin & Mineral, Botanical with Nutrients, and Other Combinations.
Data Sources & Methodology

Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).

Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.

Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.

Disclaimer, Not Medical Advice

Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Read our methodology , how this data is sourced, computed, and verified.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.