Drug interactions between Coumadin and simvastatin
Results for the following 2 drugs: |
|
|---|---|
| Coumadin (warfarin) | |
| simvastatin | |
Interactions between your selected drugs
warfarin ⇔ simvastatin
Applies to: Coumadin (warfarin) and simvastatin
Simvastatin may slightly increase the anticoagulant response to warfarin. The mechanism may be warfarin displacement from protein binding sites. The clinical significance of this interaction has not been established, however, clinical monitoring of patient warfarin response and tolerance is recommended. Simvastatin may interact in a similar way with other oral anticoagulants. In addition, a case study has reported reversible rhabdomyolysis and acute renal failure 7 days following initiation of warfarin in a patient stabilized on simvastatin. Pravastatin, another HMG-CoA reductase inhibitor, does not appear to affect anticoagulation. Patients should be advised to promptly report any signs of bleeding to their physician, including pain, swelling, headache, dizziness, weakness, prolonged bleeding from cuts, increased menstrual flow, vaginal bleeding, nosebleeds, bleeding of gums from brushing, unusual bleeding or bruising, red or brown urine, or red or black stools.
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