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Ask Dr. Gourmet

Would drinking hot water with lemon affect my INR?

I have been looking at your amazing website. I just want to know - I normally have a glass of hot water and lemon juice in the morning. Would this affect my INR level, since I take my warfarin the night before?

Dr. Gourmet Says...

several lemons

This should not be a problem, especially if it is something you do on a consistent basis. Lemon juice contains no measurable Vitamin K.

Thanks for writing,

Timothy S. Harlan, MD, FACP
Dr. Gourmet