How Cranberry interacts with warfarin

Interaction type: Interactions

Interaction rating: Case Study Support

There have been several case reports where cranberry interrupted the effectiveness of warfarin in people who had been taking a stable dose. Do not take these together without the recommendation of your healthcare professional. (1)


  1. View Abstract: Rafe Suvarna, Munir Pirmohamed, Leigh Henderson. Possible Interaction between warfarin and cranberry juice. BMJ. Dec2003;327:1454.