During the study 14-days screening period is provided to evaluate H.pylori and endoscopic status of the patient and to confirm the presence of dietary fiber deficiency (based on standard computerized dietary questionnaire). On the baseline physical examination, GERD-Q questionnaire, GERD symptom severity scale (by Likert), Bristol stool scale, high resolution esophageal manometry and 24-hours esophageal pH-impedance studies are to be provided. Since baseline, up to day 10 Mucofalk 15 g/day in TID regimen is to be given. All the patient will receive standardized menu. Repeat evaluation of symptoms, high resolution esophageal manometry and 24-hours esophagel pH-impedance are to be done at the day 10 of the study.