This antibiotic is not appropriate for use as an oral agent in the treatment of recurrent peptic ulcer associated with Helicobacter pylori (AIPG 2011)
a. Metronidazole (in combination with tetracycline and bismuth) is one of the antibiotic regimens sometimes used to eradicate H.pylori. These antibiotics are combined with a proton pump inhibitor. Amoxicillin and clarithromycin are also commonly used for this putpose.
b. Vancomycin is not used and should be reserved for management of MRSA infections, for which it is the drug of choice.