Gaviscon Peppermint Flavour Tablets bring relief from the pain and discomfort of heartburn and acid indigestion, which for example, can occur after meals or during pregnancy. This product belongs to a group of medicines called 'reflux suppressants', which form a protective layer on top of the stomach contents to prevent stomach acid escaping from the stomach where it works into the food pipe causing pain and discomfort. What are these tablets? Each chewable tablet contains 250mg sodium alginate, 133.5mg sodium hydrogen carbonate and 80mg calcium carbonate as the active ingredients. The tablets do not contain sugar or gluten. You can take this product if you are pregnant or breast-feeding... Fast soothing relief. Long lasting. Heartburn & indigestion. Sodium Alginate . Sodium Hydrogen Carbonate . Calcium Carbonate. Gaviscon.