Food Interactions

Publication Date: 
Tue, 01/01/2013

Understanding how diet can affect your INR is an important aspect of living a healthy life while on warfarin. Regardless of vitamin K content, all foods have the potential to interact and reduce the effectiveness of warfarin, so it is important to pay close attention to the foods you eat.

It is important to remain consistent with your beverage intake in order to avoid fluctuations in your INR. More frequent INR testing is recommended to help identify any food/drug interactions with warfarin.1

  1. Heneghan C., et al. (2006). Self-monitoring of oral anticoagulation: a systematic review and meta-analysis. Lancet, 367, 404-11.