i had to learn all i could to help protect myself. once i got the facts, my doctor and i chose xarelto®. xarelto®... to help keep me protected. once-daily xarelto®, a latest-generation blood thinner... ...significantly lowers the risk of stroke in people with afib not caused by a heart valve problem. it has similar effectiveness to warfarin. xarelto® works differently. warfarin interferes with at least 6 blood-clotting factors. xarelto® is selective, targeting just one critical factor interacting with less of your body's natural blood-clotting function. for afib patients well-managed on warfarin, there is limited information on how xarelto® compares in reducing the risk of stroke. don't stop taking xarelto® without talking to your doctor, as this may increase risk of stroke. while taking, you may bruise more easily, or take longer for bleeding to stop. it may increase your risk of bleeding if you take certain medicines. xarelto® can cause serious, and in rare cases, fatal bleeding. get help right away for unexpected bleeding, unusual bruising, or tingling. if you've had spinal anesthesia, watch for back pain or any nerve or muscle-related signs or symptoms. do not take xarelto® if you have an artificial heart valve