Bruising caused by warfarin. Among older adults complications from warfarin use cause the most drug-related visits to the emergency department.

Bruising caused by warfarin. Among older adults complications from warfarin use cause the most drug-related visits to the emergency department. The difficulty in determining proper dosing for individuals and random changes to diet, such as consumption of leafy greens, can cause problematic and sometimes dangerous side effects.

Dr. P. Marazzi/Science Photo Library