Ulcerbrex 20 mg is a prescription medication containing rabeprazole sodium in gastro-resistant tablet form. Each pack contains 28 tablets. This medication is manufactured by Cinfa pharmaceuticals. The tablets are gastro-resistant, which means they have a special coating to prevent them from breaking down in the stomach acid before reaching the intended site of action. The active ingredient rabeprazole sodium belongs to a class of medications called proton pump inhibitors (PPIs). Always take this medication exactly as prescribed by your healthcare provider.