<prompt> Regarding H. pylori, all are true except ?Gram-negative bacillusStrongly associated with duodenal ulcer DUAssociated with lymphomaIt should be eradicated in all cases whenever detected  <response>: Ans. is d i.e., It should be eradicated in all cases whenever detected . Treatment is indicated only for H. pylori related gastric and duodenal ulceration and not for asymptomatic colonization. Recommended Treatment regimens for Helicobacter pylori Regimen, Duration Drug 1 Drug 2 Drug 3 Drug 4 FIRST - LINE TREATMENT Regimen 1: OCA 7 daysa Regimen 2: OCM 7 days SECOND - LINE TREATMENT Omeprazole 20 mg bid Omeprazole 20 mg bid Clarithromycin 500 mg bid Clarithromycin 500 mg bid Amoxicillin 1 g bid Metronidazole -- 500 mg bid Regimen 3: OBTM 14 daysd Omeprazoleh 20 trig bid Bismuth subsalicylate 2 tabs qid Tetracycline HCI Metronidazole 500 mg qid 500 mg tid Two new regimes have been added in 18the of Harrison Drug 1 Drug 2 Drug 3 Regimen 4: sequential 5days 5days omeprazole omeprazole amoxacillin amoxacillin tinidazole Regimen 5 OAL omeprazole amoxacillin levofloxacin 