What is a potential side effect of Warfarin that patients should be aware of?

Warfarin, an anticoagulant medication, plays a crucial role in preventing blood clots but comes with a range of potential side effects that patients need to be aware of. One of the more serious side effects is skin and tissue necrosis, which can occur due to rapid changes in anticoagulation levels, especially during the initiation of therapy or when the dose is being adjusted.

This necrosis is a result of an imbalance in the clotting system, where certain blood vessels may become occluded, leading to localized tissue death. This side effect is less common but can be severe and may require immediate medical attention.

Other options listed do not align with known effects of Warfarin. Increased energy levels, weight gain, and improved appetite are not associated with Warfarin and would typically not be expected outcomes for someone taking this medication, making the acknowledgment of skin and tissue necrosis vital for patient safety. Understanding these risks helps ensure that those on Warfarin can recognize and respond promptly to any adverse effects they may experience.