Heartburn and disturbances of the upper gastrointestinal tract are a thing of the past when individuals take GastroCare 100 Chew by Karuna. These convenient. chewable tablets contain a special blending of botanicals. such as slipper elm bark. and zinc. designed to benefit good upper GI health. GastroCare 100 Chew by Karuna provides fast action for helping to heal the mucous lining of the esophagus. gastrointestinal passage and the stomach.