MAJOR — Use With Caution
FDA-documented interaction. Celecoxib CYP2C9 inhibition plus residual bleeding risk. Monitor INR closely. COX-2 selectivity does not eliminate the interaction.
Evidence level: STRONG
Celecoxib (Celebrex) can increase warfarin levels by blocking the enzyme that metabolizes warfarin. Although celecoxib is marketed as gentler on the stomach than other NSAIDs, it still increases bleeding risk when combined with warfarin.
Celecoxib inhibits CYP2C9, increasing warfarin S-enantiomer levels. Although COX-2 selective, celecoxib retains some antiplatelet effect at high doses and still carries GI bleeding risk. FDA warfarin label warns about NSAIDs including COX-2 inhibitors.
If prescribed Celebrex while on warfarin, get your INR checked within a week. Do not assume Celebrex is safe with warfarin just because it is gentler on the stomach.
High bleeding risk combination. NSAIDs impair platelet function and can cause GI bleeding — this is amplified by anticoagulants. If your prescriber approves short-term NSAID use, take with food and use the lowest dose. Consider acetaminophen as a safer alternative for pain.
Higher risk with: older age (65+), history of GI bleeding, concurrent use of multiple blood-thinning agents, liver disease, heavy alcohol use, recent surgery.
Easy bruising, blood in stool, nosebleeds, bleeding gums, prolonged bleeding
Monitor INR closely. Discuss acetaminophen as safer alternative. COX-2 selectivity does not eliminate the pharmacokinetic or pharmacodynamic interaction with warfarin.
This medication combination requires careful medical oversight. Your doctor or anticoagulation clinic can adjust doses or select alternatives with fewer bleeding risks. Frequent INR monitoring is essential.
Celecoxib (Celebrex) can increase warfarin levels by blocking the enzyme that metabolizes warfarin. Although celecoxib is marketed as gentler on the stomach than other NSAIDs, it still increases bleeding risk when combined with warfarin.
High bleeding risk combination. NSAIDs impair platelet function and can cause GI bleeding — this is amplified by anticoagulants. If your prescriber approves short-term NSAID use, take with food and use the lowest dose. Consider acetaminophen as a safer alternative for pain.
Easy bruising, blood in stool, nosebleeds, bleeding gums, prolonged bleeding
This medication combination requires careful medical oversight. Your doctor or anticoagulation clinic can adjust doses or select alternatives with fewer bleeding risks. Frequent INR monitoring is essential.
Monitor INR closely. Discuss acetaminophen as safer alternative. COX-2 selectivity does not eliminate the pharmacokinetic or pharmacodynamic interaction with warfarin.
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