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Our Members Asked:

Is it true that fish oil supplements may contain soy? I'm allergic!

Reviewed and edited by Tod Cooperman, M.D. Tod Cooperman, M.D.

Initially Posted: 01/26/2016 | Last Updated: 05/30/2019
Do Fish Oil Supplements Contain Soy? -- bottle of fish oil and fish oil capsules

Recent CL Answers

Answer:

Yes, a number of fish oil supplements (as well as krill and cod liver oil supplements) contain soy, which may be added as a source of tocopherols and tocotrienols (vitamin E). However, since it is a common allergen, manufacturers are required to list this on the label, under "Other Ingredients."

To find a fish oil that does not contain soy and has passed testing by ConsumerLab.com (which checks for levels of the omega-3 fatty acids EPA and DHA, freshness, and lack of contamination), see our Reviews of Fish Oil Supplements and/or Cod Liver Oil Supplements supplements: Click on the "Ingredients" link in the first column of the results table (under the product name), which provides a complete list of ingredients for each product. 

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