Fast effective relief from indigestion and heartburn. **Key Benefits:** - Fast-acting antacid - Soothing relief - Spearmint flavour Containing antacid to neutralise excess stomach acid, Rennie Spearmint tablets work fast to relieve the symptoms of heartburn and indigestion. Rennie Spearmint tablets contain two naturally-occurring antacids called calcium carbonate and magnesium carbonate which neutralise excess stomach acid by turning it into water & other natural substances. Calcium carbonate acts directly in the oesophagus, as well as the stomach, and both antacids are then eliminated by your body. **Usefull information about heartburn and indigestion:** Heartburn is the name given to the burning feeling or heat that begins in your chest or throat and rises upwards to the throat. Indigestion, also known as dyspepsia, is a general term for pain or discomfort felt after meals in the stomach region, associated with difficulty in digesting food. Heartburn is very common during pregnancy especially during the third trimester. Heartburn affects 22% of women in the first trimester, 39% in the second and up to 72% in the last.