Rabicer DSR, 30mg/20mg A capsule is a combination medication used to treat gastroesophageal reflux disease (acid reflux). Gastroesophageal reflux disease (GERD) is a chronic (long-term) disorder in which the stomach produces an excessive amount of acid. Rabicer DSR, 30mg/20mg Capsule decreases stomach acid production and lessens the pain associated with heartburn and acid reflux. You must take it exactly as directed for it to be effective. Some easy lifestyle adjustments can help alleviate the symptoms of GERD. Consider which foods cause heartburn and attempt to avoid them; eat smaller, more frequent meals; decrease weight if you are overweight; and discover ways to relax. Avoid eating within 3-4 hours of going to bed.