And guess what Bobertz.....Richard gives you another good reason to avoid that bad-ass C-Dif............Metronidazole, aka Flagyl, Its one of only two known antibiotics that kills C-Dif. When you're on it you can't even use mouthwash with an alcohol component! I had to check everything that might be absorbed by my body! Then, if that doesn't work, you have a last resort one, Vancomycin, which costs 5 bucks a pill and you need 3 or 4 a day!