here's how xarelto works. xarelto® works differently. warfarin interferes with at least six blood-clotting factors. xarelto® is selective... ...targeting just one critical factor, interacting with less of your body's natural blood-clotting function. don't stop taking xarelto® without talking to your doctor as this may increase risk of blood clots. 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 or abnormal bleeding. tell your doctor before all planned medical or dental procedures and before starting xarelto® about any conditions, such as kidney, liver, or bleeding problems. you've got to learn all you can... ...to help protect yourself from dvt and pe blood clots. talk to your doctor about xarelto®. there's more to know.