Background: Helicobacter pylori (H. pylori) infection is a public health concern. In fact, due to bacterial resistance, treatment strategy is a challenge. It is then more recommended to prolong first-line treatment. In order to be acceptable, the clinical efficacy of treatment must be higher than 90%. Aim: We aimed to assess the outcome of prolonged first-line treatment among adults. Patients and Methods: The study was cross-sectional among adults and patients were treated for H. pylori eradication for the first time during 10 to 14