Gaviscon Double Action Liquid provides powerful, fast effective relief from heartburn and indigestion.Brings fast, soothing and long lasting relief from the pain and discomfort of heartburn and acid indigestion.Lasts up to 4 hoursCombining two antacids, calcium carbonate and sodium bicarbonate, that helps to neutralise excess stomach acid to relieve pain and discomfort.Safe to use in pregnancyDo not take if you are allergic to any of the ingredients.Not suitable for children under 12 years