Case: A 70-year-old man is hospitalized with severe diarrhea, abdominal pain, and dehydration. Stool testing confirms C. difficile infection, and he is started on oral fidaxomicin. After reviewing his medication list, the physician notes he is taking warfarin for atrial fibrillation and atorvastatin for hyperlipidemia. Question: Which of the following is an advantage of fidaxomicin in this patient?