Side effects are not common but can happen. The most common are bruising or minor bleeding. Expect to bruise easier while on warfarin. To lower your chance of bleeding, your INR should be in the range set for you. Tell your provider right away if you have any side effects listed below. You may need to change your dose.
You are taking warfarin to help protect you from having a blood clot or prevent you from getting another one. Call your provider if you have:
Very rare, but serious, side effects are skin necrosis (death of skin tissue) and purple toe syndrome.