Can I take Amlodipine and Aspirin 300 together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
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Taking aspirin with amlodipine may slightly increase the risk of stomach irritation or bleeding, and high doses of aspirin (like 300mg) can sometimes make blood pressure medication slightly less effective.
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Why this happens
Aspirin belongs to a group of medicines called NSAIDs. These can cause the body to hold onto salt and water, which works against amlodipine's job of lowering blood pressure. Additionally, both medicines can affect blood flow and the lining of the stomach.
What you should do
Back to contentsIt is generally safe to take these together occasionally, but you should monitor your blood pressure regularly. If you need to take 300mg of aspirin frequently, speak to your GP or pharmacist, as they may prefer you to use a different painkiller like paracetamol which does not affect blood pressure. Seek medical advice if you notice any unusual bruising or dark, tarry stools.
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Important precautions
Back to contentsAsthma
Do not take aspirin if you have a history of asthma triggered by aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs), as it can cause a severe, life-threatening asthma attack.
Stomach ulcers or bleeding disorders
Avoid aspirin if you have an active stomach ulcer or a history of bleeding problems, as it significantly increases the risk of serious internal bleeding.
Food and drink warnings
Back to contentsGrapefruit juice
Grapefruit juice can increase the amount of amlodipine in your body and may cause your blood pressure to drop too low. It is best to avoid drinking large amounts of grapefruit juice while taking this medicine.
Alcohol
Drinking alcohol while taking aspirin can increase the risk of irritation and bleeding in your stomach. It is best to limit alcohol intake or avoid it if you have a sensitive stomach.
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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.
25 Jan 2026 | Originally published

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