Alendronate and Aspirin Interaction
Drug interaction information between Alendronate and Aspirin.
Alendronate and Aspirin have a documented moderate interaction in FDA labeling.
FDA drug labeling documents a moderate-severity interaction between Alendronate and Aspirin. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
Both of these medicines can be hard on your stomach and esophagus. Using them together increases the chance of developing irritation or ulcers in your digestive system.
What To Do
Use caution when taking these drugs together. Tell your doctor if you have any stomach pain or heartburn.
FDA Label Information
( 7.1 ) Use caution when co-prescribing aspirin/nonsteroidal anti- inflammatory drugs that may worsen gastrointestinal irritation. 7.2 Aspirin In clinical studies, the incidence of upper gastrointestinal adverse events was increased in patients receiving concomitant therapy with daily doses of alendronate sodium greater than 10 mg and aspirin-containing products.
Aspirin Also Interacts With
- Atenolol major
- Fluoxetine major
- Ibandronate major
- Apixaban moderate
- Desvenlafaxine moderate
Frequently Asked Questions
Can I take Alendronate and Aspirin together?
This is a moderate interaction. Use caution when taking these drugs together. Tell your doctor if you have any stomach pain or heartburn.
How serious is the interaction between Alendronate and Aspirin?
This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.
Why do Alendronate and Aspirin interact?
Both of these medicines can be hard on your stomach and esophagus. Using them together increases the chance of developing irritation or ulcers in your digestive system.
Understanding the Alendronate and Aspirin Interaction
FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Alendronate belongs to the Bisphosphonate class and Aspirin belongs to the Antiplatelet / NSAID class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Both of these medicines can be hard on your stomach and esophagus. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Alendronate has 2 total documented interactions on file in this dataset, and Aspirin has 47. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Use caution when taking these drugs together. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Alendronate or Aspirin based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.