Gaviscon works by forming a raft (a protective barrier) on top of the stomach contents soon after it has made contact with the stomach acid. The raft acts as a strong physical barrier and helps to keep stomach contents in the stomach where they belong and not in the food pipe where they hurt.
Works in just 4 minutes and lasts for up to 4 hours!**
*Strugala et al. J. Int Med Res. 2010 38:449-457
**Chevrel B Int Med Res 1980, 8,4,300-302 (bryan306