Phase II Study of KWA-0711 in Patients With Chronic Constipation (CC)

Inclusion Criteria: * The patients who experienced fewer than three Spontaneous Bowel Movements (SBMs) per week for more than 6 months prior to the enrollment * The patients who experienced one or more of the following signs or symptoms during more than 25% of bowel movements for more than 6 months: straining, lumpy or hard stools, and a sensation of incomplete evacuation Exclusion Criteria: * Patients who have secondary constipation caused by systemic disorder * Patients who have organic constipation * Patients who received intestinal resection