are alignates antacids
Antacid medicines can also contain another group of medicines, called alignates. Alignates form a protective layer on the surface of your stomach which prevents acid flowing into your oesophagus (gullet).Sodium alginate is found in most medicines that are used to treat indigestion and gastro-oesophageal reflux disease (GORD).ntacids work by neutralising any acid that is in your stomach, reducing heartburn symptoms and relieving pain. Antacids can also be combined with other medicines to help relieve the symptoms of heartburn.