Purpose: Evaluation the effect of Myrtus Communis L. (Myrtle) fruit syrup on relapsing of Gastro esophageal reflux disease. Design: Randomized, double blind, placebo controlled, and multicentral. Population: Cases were selected from Traditional Clinics and Shariati Hospital. Inclusion criteria: Age between 20-60 years, reflux symptoms more than once a week. Exclusion criteria: Alarm signs, having severe complication, sensitivity to Myrtus Communis. Study size: Ninety, after selecting the patients and taking inform consent, were randomized into 2 groups, using random number tables. Intervention: Case group: Myrtus Communis L. (Myrtle) fruit syrup, 5 cc after each meal, Breakfast and Lunch and Dinner, and Omeprazole capsule 20mg with fasting, for 6 Weeks. Control group: Placebo syrup of Myrtle fruit, 5 cc after each meal, Breakfast and Lunch and Dinner and Omeprazole capsule 20mg with fasting, for 6 Weeks. After this time, the drug has been discontinued and relapsing symptoms after 2 weeks will be reviewed. Main outcome variable is relapsing of Gastro esophageal reflux disease.