Fast, soothing and long-lasting relief for heartburn and indigestion. Gaviscon Extra Strength Aniseed Liquid provides effective relief from the pain and discomfort of heartburn and acid indigestion. It contains double the concentration of sodium alginate compared with Gaviscon Original so you only need to take half as much. Suitable for use whilst pregnant or breastfeeding. • Fast, soothing and long-lasting relief from the pain and discomfort of heartburn and indigestion • Contains double the concentration of sodium alginate compared with Gaviscon Original so you only need to take half as much • Suitable for use whilst pregnant or breastfeeding. • Gaviscon Extra Strength forms a protective physical barrier to help relieve heartburn and indigestion symptoms.