Gaviscon Advance Aniseed Liquid is specially designed to treat gastro-oesophageal reflux. Regularly-experienced symptoms can include acid reflux, heartburn, and indigestion, especially after meals, during pregnancy, and with oesophagitis. A reflux suppressant, this oral suspension forms a 'raft' over the stomach's contents to block stomach acid from going into the oesophagus, thus relieving pain and discomfort. As it works physically, Gaviscon Advance is also suitable to take during pregnancy.