Can grape increase a patient inr?

Yes, grapes, particularly when consumed in large amounts, can potentially increase a patient's International Normalized Ratio (INR). This is mainly due to their high vitamin K content, which plays a crucial role in blood clotting. For patients on anticoagulant medications like warfarin, fluctuations in vitamin K intake can affect INR levels, leading to either increased bleeding risk or clotting. It's essential for such patients to maintain a consistent intake of vitamin K-rich foods, including grapes.