Can I take Cod liver oil and Garlic supplements together?

Why this happens

Both cod liver oil (which contains omega-3 fatty acids) and garlic have antiplatelet effects. This means they both make the 'sticky' cells in your blood (platelets) less likely to clump together to form clots. When used together, this effect is added together, making it harder for your blood to clot if you get a cut or injury.

What you should do

For most people, taking these together in standard doses is fine, but you should watch for signs of easy bruising, nosebleeds, or bleeding gums. If you are scheduled for surgery or dental work, you should stop taking both supplements at least two weeks beforehand. If you are already taking prescription blood-thinning medication (like warfarin, aspirin, or clopidogrel), speak to your doctor before combining these supplements.

Important precautions

Pregnancy

Do not take cod liver oil if you are pregnant or planning to become pregnant. It contains high levels of Vitamin A (retinol), which can harm the development of an unborn baby.

Surgery or dental procedures

Both cod liver oil and garlic have blood-thinning effects. You must stop taking them at least two weeks before any planned surgery or dental work to prevent excessive bleeding.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol when taking garlic supplements. Both garlic and alcohol can have blood-thinning effects; combining them may increase your risk of bruising or bleeding. Additionally, alcohol can irritate the stomach lining, which may worsen the digestive side effects sometimes caused by garlic.

It is best to avoid or strictly limit alcohol when taking cod liver oil. Both alcohol and high doses of vitamin A (found in cod liver oil) can put strain on the liver; combining them may increase the risk of liver toxicity.

Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.