- Control Group: Rebamipide placebo + Esomeprazole Investigational Product (IP): Rebamipide 100 mg tablet Rebamipide placebo tablet Esomeprazole 20 mg tablet Dosage regimen: Administration route: PO Rebamipide 100 mg t.i.d Rebamipide placebo t.i.d Esomeprazole 20 mg o.d Target Population Male or female subjects aged from 18 years to less than 80 years with a diagnosed of Functional Dyspepsia (FD) Primary Endpoint: Change in Leeds Dyspepsia Questionnaire (LDQ) total score from baseline to 8 weeks of treatment Secondary Endpoints: 1. The change in Health-Related Quality of Life (EQ-5D) from baseline to 8 weeks of treatment 2. The cost effectiveness based on cost per QALY gained between the study group compared to the control group at 8, 12 weeks 3. The change in Leeds Dyspepsia Questionnaire (LDQ) total score and Health-Related Quality of Life (EQ-5D) from baseline to 12 weeks Inclusion Criteria: 1. Patients diagnosed with Functional Dyspepsia using Rome III diagnostic criteria 2. Age ≥ 18 years, < 80 years 3. Subject who has ability to provide written informed consent and willingness to comply with the requirement of the protocol 4. Able to communicate in English, Malay or Mandarin languages 5. Patients on prior dyspepsia treatment - after washout period of 1 week Exclusion Criteria: 1. Patients with known hypersensitivity to Rebamipide and/or Esomeprazole and any other component of these formulations.