Fidaxomicin is an antibiotic, used to treat that supericky Clostridioides difficile thing. It stops those germs from making their RNA, kind of like a big roadblock for their growth. You can get this in 200 mg tablets that have that fancy coating on them.
You should take 200 mg of it, two times a day, for 10 days straight. Each bottle’s got 20 of those tablets.