Rennie Spearmint Heartburn & Indigestion Chewable Tablets 24sRennie Spearmint fast-acting tablets get to work within minutes to provide effective relief from heartburn, indigestion and acid reflux.Each tablet contains two antacids - calcium carbonate and magnesium carbonate - that work quickly and powerfully to neutralise excess acid in the stomach.® Rennie is a registered trademark.Fast & effective reliefFor heartburn & indigestion