Which medicines and supplements should you avoid mixing with aspirin?
Aspirin can raise bleeding risk and interact with several common drugs. Avoid taking aspirin together with (or only do so under a clinician’s guidance):
- Other “blood thinners” (anticoagulants and antiplatelets): warfarin, apixaban, rivaroxaban, dabigatran, heparin, clopidogrel, and others. Combining increases the chance of bleeding.
- NSAIDs (ibuprofen, naproxen, and similar pain relievers): taking them together can increase stomach and bleeding risks, and some NSAIDs can reduce aspirin’s heart-protective effect when timed closely.
- Corticosteroids (like prednisone): this pairing can increase gastrointestinal bleeding risk.
- Certain antidepressants: especially SSRIs and SNRIs, which can increase bleeding risk when combined with aspirin.
- Some supplements that affect clotting: fish oil at higher doses, vitamin E (high doses), garlic tablets, ginkgo, and others. These can further increase bleeding risk.
What about alcohol, coffee, and herbal products?
- Alcohol: combining alcohol with aspirin raises the risk of stomach irritation and bleeding.
- Herbal products: products with clotting-related effects (for example, ginkgo or high-dose fish oil) can increase bleeding risk when taken with aspirin.
What should you not take aspirin with if you have ulcers, reflux, or bleeding history?
If you have a history of stomach ulcers, gastrointestinal bleeding, or easy bruising/bleeding, avoid stacking aspirin with other drugs that also irritate the stomach or impair clotting (especially other NSAIDs, steroids, or anticoagulants) unless a clinician specifically tells you to.
Who should be extra careful?
Extra caution is needed if you are:
- Taking prescription anticoagulants or antiplatelet medications
- Pregnant (especially later pregnancy)
- Have a bleeding disorder or low platelets
- Have uncontrolled high blood pressure
- Have a history of ulcers or GI bleeding
Important safety note: aspirin is not for everyone
Do not use aspirin to treat pain or fever in children or teens with viral illness (like flu or chickenpox) because of the risk of Reye’s syndrome. Seek guidance for safer alternatives.
If you already took aspirin, what should you watch for?
Get urgent medical help if you develop signs of bleeding such as black/tarry stools, vomiting blood or material that looks like coffee grounds, severe or worsening stomach pain, fainting, or unusual bruising.
Quick clarification so you get the right answer
Are you asking about aspirin with a specific medication (name it), or are you looking for general “do not mix with” guidance for over-the-counter aspirin? Also, is it low-dose aspirin (81 mg) or higher-dose aspirin?