Welcome Raymond!
I am NOT a medical professional by any stretch of the imagination, but a little poking around indicates that NICOTINE usage with warfarin have no direct interaction. Nicotine is a stimulant, which can increase your heart rate. However, if you reduce your nicotine intake, you might need to have your warfarin adjusted accordingly.
SMOKING
throws in other chemicals that affect other systems within the body that can have adverse results.
PTINR | Warfarin and Nicotine Use | ptinr.com
I'd say consult with your physician....