Review Question - QID 212461

A 81-year-old man is brought to the emergency department after he fell asleep at the dinner table and was not able to be roused by his family. His past medical history is significant for Alzheimer disease though he is still relatively functional at baseline. He has also been taking warfarin over the last 3 months after he suffered a deep venous thrombosis. After he was transported to the ED, his family found that the pills his grandson takes for seizures were missing. On presentation, he is found to be somnolent and physical exam reveals ataxia and nystagmus. After determining the cause of this patient's symptoms, his physicians begin monitoring his international normalized ratio, because they are concerned that it will start trending down. Which of the following treatments would most improve the urinary excretion of the substance likely responsible for these symptoms?