The goal of this clinical trial is to learn if a modified bismuth-containing therapy for the treatment of helicobacter pylori infection works to treat chronic helicobacter pylori related gastritis in adults treated either for first time or after a previous failure of another helicbacter erdication therapy. It will also learn about the safety and compliance of the modified bismuth containing therapy for helicobacter pylori.
The main questions it aims to answer are:
Does the modified bismuth-containing therapy for helicobacter pylori maintains a high eradication profile? What medical problems do participants have when taking the bismuth containing therapy? Researchers will present the eradication percentage of the modified bismuth containing therapy for helicobacter pylori in a difficult to treat population with a high profile of resistance to antibiotics for the treatment of helicobacter pylori separately for first time treated patients or patients with previous failures of other therapies.
Participants will:
Take the modified bismuth containing therapy which consists of four different medications (esomeprazole, amoxicillin, metronidazole, bismuth subcitrate) taken for 14 days in selected timepoints.
Visit the clinic at the end of therapy for checkups and at 6 to 8 weeks after the end of therapy for final evaluation of completed eradication.
Keep a diary of their symptoms and the number of medications taken.
Patients of 18 years or older with dyspepsia or iron deficiency anaemia, referring for upper GI endoscopy and found to be infected with Helicobacter pylori (positive rapid urease test or histology), naïve or experienced to H. pylori eradication treatment, will be invited to participate in the study.
Exclusion criteria are: age below 18 years, presence of severe co-morbidities (i.e. liver cirrhosis, renal failure, haematological, neurological, psychiatric, severe cardiovascular or pulmonary disease), previous gastric surgery, gastric malignancies, Zollinger-Elisson syndrome, known allergy or other contraindications to the study medications, previous H. pylori bismuth containing therapies, use of antibiotics , bismuth salts , NSAIDS or aspirin in the preceding month, use of PPI in the preceding two weeks and not willing to participate in the study. Pregnant or lactating women will also be excluded.