Related Experiment Video
Updated: Aug 14, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
Published on: October 12, 2012
Potentiation of oral anticoagulation and hemarthrosis associated with nabumetone
V C Dennis1, B K Thomas, J E Hanlon
1Department of Pharmacy Clinical and Administrative Sciences, College of Pharmacy, University of Oklahoma Health Sciences Center, Oklahoma City 73190, USA.
Abstract:
Concomitant therapy with warfarin and nonsteroidal antiinflammatory drugs (NSAIDs) is of concern due to the potential for increased bleeding. Nonsteroidal antiinflammatory drugs may alter patient response to warfarin by pharmacodynamic or pharmacokinetic interactions. A man receiving long-term, stable warfarin therapy experienced a significant increase in international normalized ratio 1 week after nabumetone was added to his regimen. Despite prompt reduction of the warfarin dosage, he experienced hemarthrosis of his right knee. Previous reports suggested lack of interaction between nabumetone and warfarin. Caution and close monitoring are advisable when the two agents are administered concomitantly.
Related Concept Videos
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Drug toxicity: Drug–Drug Interaction
Venous Thrombosis III: Interprofessional Care