A Study Of The Effect Of CJ-023,423 On The Incidence Of Stomach Ulcers

Inclusion Criteria: * Is a healthy adult 18 to 75 years of age, inclusive; healthy is defined as no clinically relevant abnormalities identified as detailed medical history, full physical examination, including blood pressure \[BP\] and pulse rate \[PR\]measurement, 12-lead electrocardiogram \[ECG\], and clinical safety laboratory tests * If female and of childbearing potential (includes women who have been postmenopausal for \< 2 years ), must be using adequate contraception, must not be lactating and must have had a negative serum pregnancy test at Screening and a negative urine pregnancy test result within 24 hours prior to receiving study drug. The site investigator must ensure that female subjects are not pregnant prior to receiving the first dose of drug; Exclusion Criteria: * Endoscopic evidence of inflammation, ulceration, erosion, petechiae, or active bleeding in the esophagus, stomach, pyloric channel, or duodenum at the baseline/ randomization (Day 1) endoscopy (Mucosal Grading Scale score \>0); * Active GI disease (e.g. inflammatory bowel disease), a history of gastroduodenal ulcers or bleeding, or a history of any gastric or duodenal surgery;