Can you suffer a stroke if taking warfarin?

Yes, you can absolutely have a heart attack while taking warfarin. Warfarin is a blood thinning medication that is sometimes used to help prevent a recurrent heart attack in people who cannot take aspirin or clopidogrel, or who have had a heart attack while taking those medications. While warfarin reduces the chances of a recurrent heart attack, nothing completely prevents a heart attack from happening. There is also an increased risk of bleeding if taking warfarin along with aspirin or plavix.