Acidex Heartburn & Indigestion Liquid brings fast, soothing and long lasting relief from the discomfort of heartburn and acid indigestion. It can be used to treat gastric reflux, (a condition in which the acid stomach contents flow upward into the foodpipe)and related conditions such as hiatus hernia, oesophagitis reflux (inflamed foodpipe) and flatulence caused by gastric reflux. Each 5ml contains: Sodium Bicarbonate 133.5mg; Sodium Alginate 250mg; Calcium Carbonate 80mg.