What is Gaviscon Advance Aniseed Flavour? Gaviscon advance oral suspension provides fast, soothing and long lasting relief from the pain and discomfort of heartburn and acid indigestion, which for example, can occur after meals or during pregnancy. Gaviscon Gaviscon advance aniseed flavour belongs to a group of medicines called \'reflux suppressants\', which form a protective layer on top of the stomach contents to prevent acid escaping from the stomach where it works into the food pipe where it hurts. How to take Gaviscon Advance Aniseed Adults and adolescents aged 12 years and over should take 5-10ml after meals and at bedtime as needed, up to four times a day.   Always read the patient information leaflet/packaging