March 21, 2008
Advisor Forum

Watch vitamin K while on warfarin

Remind patients taking warfarin (Coumadin) that foods high in vitamin K (e.g., lentils, chickpeas, coleslaw, liver, hummus, seaweed, and green tea) can cause the international normalized ratio to drop. Maintaining a diet that keeps vitamin K levels stable is essential.
—Joan Ferrelli, APRN-BC, Wall Township, N.J. (113-25)
From the March 2008 Issue of Clinical Advisor »
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