Drug interactions
Olsalazine + Warfarin
Severity: Minor
Olsalazine and Warfarin: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Olsalazine is a salicylate-derived aminosalicylate, and salicylates have been reported to potentiate warfarin in isolated cases. Systemic exposure to the active mesalamine is low, so the effect is likely modest.
What this interaction means in plain words
Olsalazine and Warfarin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Olsalazine belongs to Gastrointestinal Tract; Warfarin belongs to Cardiovascular.
Why it happens
Possible small additive effect of salicylate on coagulation; mechanism not firmly established.
What to do
Check INR after starting or stopping olsalazine and adjust warfarin if the INR changes.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Olsalazine and Warfarin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Warfarin
- Defibrotide + Warfarin Contraindicated
- Ketorolac + Warfarin Contraindicated
- Abciximab + Warfarin Major
- Acetylsalicylic acid + Warfarin Major
- Adagrasib + Warfarin Major
- Amiodarone + Warfarin Major
Frequently asked questions
Can I take Olsalazine with Warfarin?
MediHelp rates the interaction as minor. Olsalazine and Warfarin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Olsalazine is a salicylate-derived aminosalicylate, and salicylates have been reported to potentiate warfarin in isolated cases. Systemic exposure to the active mesalamine is low, so the effect is likely modest.
How serious is the interaction between Olsalazine and Warfarin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check INR after starting or stopping olsalazine and adjust warfarin if the INR changes.
What other medicines interact with Warfarin?
MediHelp also lists interactions of Warfarin with, for example, Defibrotide, Ketorolac, Abciximab. The full list is on the Warfarin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
