To Evaluate the Efficacy of Z-338 in Subjects With Functional Dyspepsia

Inclusion Criteria: * Postprandial fullness, upper abdominal bloating and/or early satiety should be at least moderate for 2 days or more at the 7 days at Visit 1 * upper abdominal pain, upper abdominal discomfort, postprandial fullness, upper abdominal bloating, early satiety, nausea, vomit and belching should be at least moderate for at least 2 symptoms for 2 days or more at the 7 days at Visit 1 Exclusion Criteria: * subjects taht heartburn should be the most bothersome symptom * Subjects presenting with primary complaints relieved by stool movements (IBS) * Subjects with diabetes by treatment * Subjects taht heartburn should be more than moderate