What dietary factors impact PT/INR with warfarin utilization?
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Foods containing vitamin K affect prothrombin time/international normalized ratio (PT/INR) levels in patients taking warfarin. A higher baseline intake of dietary vitamin K is associated with less PT/INR fluctuation (SOR: C, disease-oriented evidence). The effect of specific dietary items like alcohol, cranberry, mango, avocado, grapefruit, soymilk, and cranberry juice is mixed (SOR: B, systematic review of low-quality trials).
Evidence-based practice 16, no. 05 (2013): 12