Warfarin · more major-labeled pairs than Allopurinol
SPL labels Warfarin + Allopurinol as minor; Warfarin 133 / Allopurinol 6 in that band.
Mechanism on file: Allopurinol slows down the body's ability to break down warfarin. This can cause warfarin to stay in the body longer and increase the risk of bleeding.
FDA SPL severity: Minor
Warfarin + Allopurinol · SPL mechanism field
Allopurinol slows down the body's ability to break down warfarin. This can cause warfarin to stay in the body longer and increase the risk of bleeding.
Minor band excerpt · Warfarin with Allopurinol
Warfarin Clinical Impact Allopurinol may inhibit the metabolism of warfarin, possibly enhancing its anticoagulant effect. Assess INR frequently and adjust warfarin dosage accordingly when allopurinol is added to warfarin therapy.
Warfarin · 2 major-labeled pairs (vs Allopurinol's 1)
- Acyclovir minor
- Adalimumab minor
- Alprazolam minor
- Amiodarone minor
Allopurinol · 6 minor + 10 total pairs
- Ampicillin/Sulbactam minor
- Famciclovir minor
- Prazosin minor
- Terazosin minor
FDA Drug Labels (SPL) via openFDA. Registry display only. Not medical advice.
Read our methodology - how this data is sourced, computed, and verified.