Gaviscon Dual Action Liquid brings fast, soothing, and long-lasting relief from the pain and discomfort of heartburn (gastric reflux) and indigestion.It works in two different ways:1. More effective reduction of excess stomach acid to relieve discomfort.2. Forming a protective layer over the stomach contents to help stop acid rising and soothe the burning pain in your chest.This liquid may help soothe in just 4 minutes (Strugala v et al. 2010)Sugar and gluten free.Suitable for occasional and moderate heartburn sufferers.