What is Gaviscon Peppermint Liquid Relief? Gaviscon Peppermint Liquid Relief brings fast, soothing and long lasting relief from the pain and discomfort of heartburn and acid indigestion. It can be used to treat gastric reflux (a condition in which the acid stomach contents flow upwards into the foodpipe) and flatulence caused by gastric reflux. It belongs to a group of medicines called \'. Fast Soothing Relief from Heartburn & Indigestion. Long Lasting. This product is sugar free and gluten free.   How to take Shake well. Take 1-2 tablespoons 4x a day for Regular Strength and 2-4 teaspoonfuls 4x a day for Extra Strength, or as directed by a doctor. Take after meals or at bedtime. Dispense product only by spoon or other measuring device. Always read the paient information leaflet/packaging