<prompt> Drug not used in the treatment of H.pylori is?CisaprideClarithromycinMetronidazoleOmeprazole  <response>: ANSWER: A CisaprideREF: Harrison 17th ed table 144-2Recommended Treatment Regimens for Helicobacter pylori:First-Line Treatment:Regimen 1: OCA 7-14 daysOmeprazoleb 20 mg bidClarithromycin 500 mg bidAmoxicillin 1 g bidRegimen 2: OCM 7-14 daysOmeprazoleb 20 mg bidClarithromycin 500 mg bidMetronidazole 500 mg bidSecond-Line Treatment:Regimen 3: OBTM 14 daysOmeprazoleb 20 mg bidBismuth subsalicylate 2 tabs qidTetracycline HC1 500 mg qidMetronidazole 500 mg tid 