Can I take Aspirin and Vitamin d2 together?
Drug interaction guide
Originally published 25 Jan 2026
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There are no known significant interactions between aspirin and vitamin D2 (ergocalciferol). It is generally considered safe to take these two medications together.
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Why this happens
Aspirin and vitamin D2 are processed by the body through different pathways. Aspirin works by blocking certain enzymes to reduce pain and inflammation, while vitamin D2 is a fat-soluble vitamin that helps the body absorb calcium. They do not interfere with each other's absorption, metabolism, or effectiveness.
What you should do
You can continue to take both as prescribed or recommended. As with any supplement or medication, ensure you are taking the correct dose of vitamin D2 as advised by your healthcare professional, as excessively high doses of vitamin D can lead to high calcium levels.
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Important precautions
Asthma
Do not take this medicine 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 allergic reaction or asthma attack.
Pregnancy (third trimester)
You must not take aspirin during the last three months of pregnancy (from 28 weeks) as it can cause serious heart and kidney problems in the unborn baby and increase the risk of bleeding during delivery.
Children and teenagers under 16 years old
Never give aspirin to children or teenagers under 16 unless specifically prescribed by a doctor. It can cause Reye’s syndrome, a rare but potentially fatal condition that causes serious liver and brain damage.
Food and drink warnings
Alcohol
Drinking alcohol while taking aspirin can increase the risk of stomach irritation and bleeding. It is best to limit alcohol intake or avoid it if you have a history of stomach issues.
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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.
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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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