Review Question - QID 108846

A 46-year-old male with a history of recurrent deep venous thromboses on warfarin presents to his hematologist for a follow-up visit. He reports that he feels well and has no complaints. His INR at his last visit was 2.5 while his current INR is 4.0. His past medical history is also notable for recent diagnoses of hypertension, hyperlipidemia, and gastroesophageal reflux disease. He also has severe seasonal allergies. He reports that since his last visit, he started multiple new medications at the recommendation of his primary care physician. Which of the following medications was this patient likely started on?