Yes..a few options.. Most cases of c. Dif colitis can be treated by oral/iv metronidazole, oral vanocomycin, and maybe add of Cholestyramine resins. Newer agent Dificid (fidaxomicin) is effective, but $$$. Bacitracin has some use, but not standard of care. For persistent/recurrent cases after treatments with above, a stool-transplant (yes, stool transplant--u read it right) can be done. Consult your doc..Good luck.
Yes, more antibiotic. Presumably, you're referring to c difficile colitis. First, stop the offending antibiotic. Second, if that isn't enough, consider oral metronidazole. Third, if that's not enough, move on to oral vancomycin. Check out http://www.Mayoclinic.Com/health/c-difficile/ds00736/dsection=treatments-and-drugs and if all else fails, consider fecal transplant! probiotics are worth a try, too!