A Dose-Ranging Study of ATI 7505 in Patients With Postprandial Distress Syndrome

Inclusion Criteria: * Were diagnosed with PDS at least 6 months prior to screening, OR had onset of 2 or more PDS symptoms at least 6 months prior to screening. * Experienced early satiety or bothersome postprandial fullness repeatedly during the 3 months prior to screening. * Had a normal upper GI endoscopy within the past year. Exclusion Criteria: * Heartburn that occurs \>3 times per week * Current Helicobacter pylori (H pylori) infection confirmed by stool sample testing or breath testing, or H pylori eradication therapy within the 6 months prior to screening * Any alarm symptoms including uninvestigated anemia, rectal bleeding, weight loss, or unresolved fever within the 6 months prior to screening * At screening, a QT interval corrected for heart rate using Bazett's correction formula (QTcB) \>440 msec as determined by the Investigator.