Inclusion Criteria:  Documented Helicobacter pylori infection Age equal or greater to 18 years Recent (<6months) upper digestive endoscopy Ability to consent to participate in the study  Exclusion Criteria:  Documented allergy to any of the available drugs Contraindications to any of the available drugs Antibiotics use for the last 4 weeks Previous gastric cancer Previous gastric surgery Pregnancy Breastfeeding