Can I take Doxazosin and Evolocumab together?

Why this happens

Doxazosin is an alpha-blocker used to treat high blood pressure or prostate enlargement, while evolocumab is a monoclonal antibody (PCSK9 inhibitor) used to lower cholesterol. They work through entirely different pathways in the body and are processed (metabolised) by different systems, meaning they do not interfere with each other's effectiveness or safety.

What you should do

You can continue taking both medications as prescribed by your doctor. As with any blood pressure medication like doxazosin, you should monitor for symptoms like dizziness or lightheadedness, but this is a known side effect of the drug itself rather than an interaction with evolocumab.

Important precautions

First-dose hypotension

Doxazosin can cause a sudden drop in blood pressure, especially after the very first dose. This may make you feel dizzy or faint when standing up. It is recommended to take your first dose at bedtime to avoid falls.

Cataract surgery

If you are due to have eye surgery for cataracts, you must tell your surgeon you are taking doxazosin. It can cause a complication called 'Floppy Iris Syndrome' which the surgeon needs to prepare for.

Latex allergy - evolocumab

The needle cover of the pre-filled pen or syringe may contain dry natural rubber (a derivative of latex), which can cause severe allergic reactions in people with a sensitive latex allergy.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol while taking doxazosin. Alcohol can increase the blood-pressure-lowering effect of this medicine, which may make you feel dizzy, lightheaded, or faint, especially when standing up.

It is best to avoid or strictly limit alcohol while taking evolocumab. Combining alcohol with cholesterol-lowering treatments can increase the risk of liver strain or damage.

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.