Can I take Fish oil and Vitamin D together?

Why this happens

Vitamin D requires dietary fat for optimal absorption in the small intestine. Fish oil provides a concentrated source of lipids that facilitates the formation of micelles, which are necessary for the transport of vitamin D into the bloodstream.

What you should do

It is perfectly safe and often recommended to take these two supplements together. For the best results, take them with your largest meal of the day to further aid absorption.

Important precautions

Bleeding disorders or use of blood-thinning medication (e.g. warfarin)

High doses of fish oil can have an antiplatelet effect, which may increase your risk of bleeding or bruising if you already take blood thinners or have a bleeding disorder.

Hypercalcaemia (high blood calcium levels)

You must not take vitamin D supplements if you have high levels of calcium in your blood or urine, as vitamin D increases calcium absorption and can lead to serious kidney damage or heart rhythm issues.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol when taking these supplements. Excessive alcohol consumption can interfere with how your body absorbs and processes Vitamin D and may increase the risk of stomach irritation when taken with fish oil.

High-fat meals

Both Vitamin D and Fish Oil are fat-soluble. Taking them with a meal that contains some fat (such as yoghurt, eggs, or avocado) significantly improves how well your body absorbs the supplements.

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.