Rennie Spearmint chewable tablets are an antacid used to relieve heartburn, acid indigestion, trapped wind and the discomfort of an upset stomach. Each tablet contains two antacids, calcium carbonate and magnesium carbonate, which help neutralise excess stomach acid. The spearmint-flavoured tablets can be chewed or sucked without water. This pack contains 24 tablets and is for adults and children over 12 years. If symptoms persist for more than 14 days, speak to your pharmacist or doctor. Always read the label and the patient information leaflet before use.