Cod liver oil contains certain "fatty acids" that prevent the blood from clotting easily. These fatty acids also reduce pain and swelling.
Cod liver oil is used for heart health, depression, arthritis, and many other conditions, but there is no good scientific evidence to support these uses.
Uses & Effectiveness
Likely Effective for
Possibly Effective for
- High blood pressure. Taking cod liver oil by mouth seems to lower blood pressure (both numbers) a small, but important, amount in people with mild high blood pressure.
- Kidney disease in people with type 2 diabetes. Taking cod liver oil seems to reduce protein in the urine, a marker for kidney disease severity.
Possibly Ineffective for
- Coronavirus disease 2019 (COVID-19). Taking cod liver oil by mouth does not seem to help prevent COVID-19.
When applied to the skin: There isn't enough reliable information to know if cod liver oil is safe or what the side effects might be.
Special Precautions and Warnings
When applied to the skin: There isn't enough reliable information to know if cod liver oil is safe or what the side effects might be. Pregnancy and breast-feeding: Cod liver oil is possibly safe when used in amounts that provide no more than the recommended daily intakes of vitamin A and vitamin D. Cod liver oil is possibly unsafe when taken in larger amounts. Do not take cod liver oil that provides more than about 3000 mcg of vitamin A and 100 mcg of vitamin D when pregnant or breast-feeding.
Children: Cod liver oil is likely safe for most children when taken by mouth in amounts that provide no more than the recommended daily intakes of vitamin A and vitamin D. Cod liver oil is possibly unsafe when taken in larger amounts.
Diabetes: Cod liver oil or other fish oils might increase blood sugar in people with diabetes, but it's not clear if this is a major concern. Cod liver oil might also lower blood sugar levels and increase the effects of some antidiabetes drugs. If you have diabetes and use cod liver oil, monitor your blood sugar levels closely.
Medications for high blood pressure (Antihypertensive drugs) interacts with COD LIVER OIL
Cod liver oil might lower blood pressure. Taking cod liver oil along with medications that lower blood pressure might cause blood pressure to go too low. Monitor your blood pressure closely.
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with COD LIVER OIL
Cod liver oil might slow blood clotting. Taking cod liver oil along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Medications for diabetes (Antidiabetes drugs) interacts with COD LIVER OIL
Cod liver oil might lower blood sugar levels. Taking cod liver oil along with diabetes medications might cause blood sugar to drop too low. Monitor your blood sugar closely.
Be cautious with this combination
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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.
This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
© Therapeutic Research Faculty 2020.