Pathogenesis of functional dyspepsia is poorly understood. Gastrointestinal motor abnormalities, Helicobacter pylori infection, impaired gastric accommodation to a meal, hypersensitivity of the afferent nerves of the gut, psychological disturbances and central nervous system dysfunction have been proposed.

Pharmacological treatments for patients with functional dyspepsia remain unsatisfactory. Only small benefits relative to placebo have been found with histamine H2 receptor antagonists, proton pump inhibitor and Helicobacter pylori eradication.

Itopride is a dopamine antagonist with acetylcholinesterase inhibitory actions. This agent is currently indicated for patients with various upper GI symptoms.

This study is aimed to evaluate the effect of Itopride on gastric emptying(by 13-C Octanoic acid breath Test), accommodation (by Gastric Scintigraphy SPECT and slow nutrient drinking test)and symptoms in FD patients

phase3 clinical trial

Inclusion Criteria:

1. All adult male or non-pregnant female patients who are diagnosed as functional dyspepsia and fulfilling Rome III criteria (1) will be considered
2. Patients should be negative for H. pylori on gastric biopsy and Urea Breath Test.
3. duodenal biopsy in these patients should be negative for giardiasis or celiac disease or any other established organic pathology
4. A normal upper abdominal ultrasound
5. Willing to participate and give consent for participation in the study.

Exclusion Criteria:

1. Age <18 years

2. Helicobacter Pylori positive on gastric biopsy and / or UBT.

3. Taking other medications that alter gastric motility like macrolide

   • anti-emetics and antibiotics .

4. Pregnant or breast-feeding females.