Kentucky Medication Aide (KMA) State Practice Exam

Which of the following is a common side effect of Warfarin Sodium (Coumadin)?

1. Weight gain

2. Hypertension

3. Hemorrhage

4. Hair loss

The correct answer is: Hemorrhage

Warfarin Sodium, commonly known by the brand name Coumadin, is an anticoagulant used to prevent blood clots. A significant side effect of Warfarin is the risk of hemorrhage, which is a condition involving excessive bleeding. This occurs because Warfarin inhibits the synthesis of vitamin K-dependent clotting factors in the liver, leading to a reduced ability for blood to clot effectively. Patients on Warfarin must be closely monitored for signs of bleeding, such as unusual bruising, blood in urine or stool, or prolonged bleeding from cuts. In the context of the other options, weight gain, hypertension, and hair loss are not typical side effects associated with Warfarin. While individual responses to medications can vary, the anticoagulant's primary concern is its potential to cause serious bleeding complications, making hemorrhage the best choice as a common side effect.