Can I take Abiraterone and Cozaar together?
Drug interaction guide
Originally published 14 Mar 2026
Meets Patient’s editorial guidelines
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Taking abiraterone and Cozaar (losartan) together can cause your blood pressure to drop too low. It may also lead to a dangerous buildup of potassium in your blood.
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Why this happens
Abiraterone can lower blood pressure as a side effect. Cozaar is designed to lower blood pressure. When used together, their effects add up. Additionally, abiraterone can affect hormone levels (mineralocorticoids) in a way that, when combined with Cozaar, makes it harder for your kidneys to clear potassium from your body.
What you should do
Back to contentsYou must speak with your doctor before taking these together. They will likely need to monitor your blood pressure and perform regular blood tests to check your potassium levels. Seek medical help immediately if you feel very dizzy, faint, or notice an irregular heartbeat.
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Using other medicines
Back to contentsTaking 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.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
14 Mar 2026 | Originally published

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