 Primary: Proportion of patients with 50 reduction of baseline symptoms score measured by the validated Porto Alegre Dyspeptic Symptoms Questionnaire Secondary: Proportion of patients with 100 reduction of baseline symptoms score measured by the validated Porto Alegre Dyspeptic Symptoms Questionnaire; Need of rescue medication; Median difference of score between groups; Mean SF-36 scores evolution between groups; Lost of productivity measured by WPAI between groups 