Final answer:
Patients taking warfarin sodium should watch for bleeding.
Step-by-step explanation:
When taking warfarin sodium, a patient should watch for bleeding. Warfarin is an anticoagulant medication that helps prevent blood clots, but it can also increase the risk of bleeding. It is important to be aware of any signs of bleeding, such as easy bruising, nosebleeds, or blood in the urine or stool. If any bleeding occurs while taking warfarin, it is crucial to seek medical attention immediately.