Gaviscon Advance Mint Chewable Tablets Gaviscon Advance Mint Chewable Tablets provide fast, soothing & long lasting relief from the pain & discomfort of heartburn & acid indigestion & can also be used to treat the symptoms of conditions such as hiatus hernia & reflux oesophagitis (inflamed food pipe). Containing double the concentration of sodium alginate than Gaviscon Original, Gaviscon Advance Mint Chewable Tablets are an extra strength formula that last up to 2x longer than antacids. Gaviscon Advance Mint Chewable Tablets are suitable for use in pregnancy & breastfeeding. Gaviscon Advance Mint Chewable Tablets belong 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.