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Allergic Reaction to Fish Oil

Fish oil capsules are often prescribed to people who want to lower their triglyceride levels in the blood and counter the effects of other medical conditions. Although this treatment can be effective, it's not for everyone. Some people cannot tolerate fish oil and must avoid its use.

  1. Allergies

    • Fish allergies are one of the most common allergies in adults. If you are allergic to fish, don't take fish oil.

    Symptoms

    • Symptoms of an allergic reaction to fish oil include difficulty breathing, hives or swelling of the face, tongue, lips or throat. Skin rash occurs in rare cases.

    Cross-Reactivity

    • If you are allergic to certain foods, other foods can trigger the same allergic reaction, according to the National Institute of Allergy and Infectious Diseases (NIAD). This is known as cross-reactivity. Consult with a doctor to find out whether fish oil might be a trigger for you.

    Treatment

    • If you have an allergic reaction to fish oil, seek medical help. Anaphylactic reactions can be fatal in people with severe food allergies, according to NIAD.

    Side Effects

    • Side effects of fish oil include stomach upset, diarrhea, indigestion, bloating and abdominal pain, according to the National Institutes of Health.

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