Related Experiment Video
Updated: Aug 14, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Atorvastatin does not alter the anticoagulant activity of warfarin
1Department of Clinical Pharmacology, Parke-Davis Pharmaceutical Research, Division of Warner-Lambert Company, Ann Arbor, Michigan, USA.
Abstract:
Twelve patients chronically maintained on warfarin were administered 80 mg atorvastatin for 2 weeks. Mean prothrombin times decreased slightly, but only for the first few days of the two-week treatment period. Thus atorvastatin had no consistent effect on the anticoagulant activity of warfarin and adjustment in warfarin dosing should not be necessary.
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...
Pharmacokinetics: Drug–Drug Interactions
Venous Thrombosis III: Interprofessional Care

