Please be advised that taking warfarin and Lansoprazole together may increase your INR.
My INR was 3 but after taking Lansoprazole for 4 days it has shot up to 4.2. My Theraputic range is INR 2.5 to 3.5 but luckily, I self-test and self dose weekly and can adjust my warfarin accordingly and will test again in 3 days to ensure I'm Theraputic.