Which statement about coumadin is true?

The statement about coumadin that is true is that there is a black box warning regarding bleeding risk. Coumadin, also known as warfarin, is an anticoagulant that is widely used to prevent blood clots. Due to its mechanism of action, which often leads to prolonged bleeding, the use of coumadin carries a significant risk of hemorrhage, especially in certain populations or when dosage is not carefully monitored. The black box warning highlights the need for healthcare providers to be cautious and to closely monitor patients for signs of bleeding and to manage their dosing effectively.

This emphasis on bleeding risk underlines the importance of patient education regarding the signs and symptoms of bleeding and the necessity for regular follow-ups and blood tests to ensure that the International Normalized Ratio (INR) remains within an appropriate therapeutic range. Monitoring is critical because coumadin's effects are not instantaneous and can vary based on diet, medications, and individual patient factors, making careful management essential for safe and effective use.