Common Blood Thinners and Anticoagulants
Aspirin increases bleeding risk when combined with warfarin, heparin, or direct oral anticoagulants like apixaban (Eliquis) and rivaroxaban (Xarelto). These interactions amplify aspirin's antiplatelet effects, potentially causing gastrointestinal bleeding or hemorrhage.[1][2]
NSAIDs and Pain Relievers
Other nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin), naproxen (Aleve), or celecoxib (Celebrex) heighten stomach irritation and ulcer risk with aspirin. Avoid concurrent use unless directed by a doctor; take with food or antacids to mitigate.[1][3]
Antiplatelet Drugs
Clopidogrel (Plavix), ticagrelor (Brilinta), or prasugrel (Effient) paired with aspirin (as in dual antiplatelet therapy post-stent) boosts bleeding odds but is standard for heart patients. Monitor for bruising or prolonged bleeding.[2][4]
Blood Pressure Medications
Aspirin can reduce effectiveness of ACE inhibitors (lisinopril, enalapril), angiotensin receptor blockers (losartan), or beta-blockers (metoprolol). High doses may raise blood pressure; low-dose aspirin (81 mg) has less impact.[1][3]
Diabetes Drugs
Metformin or insulin with aspirin rarely causes low blood sugar, but monitor glucose levels. High aspirin doses might affect sulfonylureas like glipizide, increasing hypoglycemia risk.[2]
Other Key Interactions
- Corticosteroids (prednisone): Increase ulcer risk.
- SSRIs (sertraline, fluoxetine): Elevate bleeding with aspirin's platelet inhibition.
- Alcohol: Multiplies GI bleeding potential.
- Methotrexate: Aspirin raises methotrexate levels, risking toxicity in rheumatoid arthritis patients.[1][3][4]
Always check with a pharmacist or use tools like Drugs.com interaction checker. Low-dose aspirin for heart protection has fewer interactions than higher analgesic doses.
Sources
[1]: FDA Aspirin Label
[2]: MedlinePlus Drug Interactions
[3]: Drugs.com Aspirin Interactions
[4]: UpToDate Aspirin Interactions