Can I take Cod liver oil and Doxadura together?

It is usually safe to take cod liver oil and doxadura (doxazosin) together, but you should monitor your blood pressure regularly.

To avoid dizziness, get up slowly from a sitting or lying position. If you feel very dizzy, faint, or notice unusual bruising, speak to your doctor or pharmacist. They may want to adjust your dose or check your blood pressure more frequently.

Why this happens

Doxazosin works by relaxing blood vessels to lower blood pressure. Cod liver oil contains omega-3 fatty acids, which also have a natural, mild blood-pressure-lowering effect. When used together, these effects can add up (an additive effect).

Cod liver oil also slightly reduces the ability of blood cells (platelets) to stick together, which can affect clotting.

You may be experiencing an interaction between cod liver oil and doxadura if:

• You feel dizzy or lightheaded, especially when standing up.

• You experience fainting or near-fainting episodes.

• You notice unusual bruising or bleeding.

• You develop headaches or flushing.

• You feel unusually tired or weak.

• Symptoms start after starting cod liver oil or increasing the dose while taking doxazosin.

If you have any of the above symptoms, you should:

• Speak to your GP or pharmacist for advice as soon as possible.

• Do not stop taking doxazosin suddenly unless advised by a healthcare professional.

• Avoid starting, stopping, or changing cod liver oil without medical advice.

• Seek urgent medical help if you faint or have heavy or persistent bleeding.

• Attend any blood pressure checks arranged to monitor your treatment.

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.