- Patients with symptoms of erosive or ulcerative gastroesophageal reflux disease (GERD) during at least a period of 3 months prior to study initiation and symptoms of GERD for at least 3 days per week within the 2 weeks prior to study initiation. The symptoms of erosive or ulcerative gastroesophageal reflux disease includes the following: heartburn, aching behind the breastbone, a need for antacids, and difficulty in swallowing. Patients with evidence by endoscopy of erosive or ulcerative gastroesophageal reflux disease with no Barret-type tissue transformation.