The study will include three phases: screening, treatment and follow-up. Screening: this phase will last a maximum of 28 days and subjects eligibility will be evaluated after informed consent signature. Urea Breath test will be performed in addition to the baseline routine evaluations.~Treatment: Subjects are randomly assigned to treatment and will be treated for 14 days. A randomization visit will take place on Day 0 and an end-of-treatment visit will take place between day 12 and 14.~Follow-up: includes two visits. approximately 14 days of treatment and 28 days after the end of treatment. Eradication of H. Pylori will be confirmed through urea breath test(UBT).
This study aims at evaluating efficacy and safety of probiotics combined with triple therapy (Clostridium butyricum capsule and Bacillus coagulans tablets, esomeprazole, clarithromycin and amoxicillin) versus bismuth-containing quadruple therapy (bismuth,esomeprazole,clarithromycin and amoxicillin) in H. pylori eradication. It is hypothesized that probiotics combined with triple therapy is non-inferior to bismuth-containing quadruple therapy. Patients with confirmed H. pylori positive status will be randomized to one of the treatments described above. At week 2 and 6 follow-up visits, a urea breath test(UBT) will be performed to confirm eradication.