Gaviscon Aniseed Liquid is an antacid medication that provides relief from heartburn, acid indigestion and acid reflux. This 500ml bottle contains a palatable aniseed-flavored formula that creates a protective barrier on top of stomach contents to prevent acid reflux. The liquid formulation contains sodium alginate and potassium bicarbonate as active ingredients. When taken, these form a protective layer that helps prevent stomach acid from flowing back into the esophagus, providing quick relief from heartburn symptoms. The aniseed flavor makes the medication more pleasant to take. The 500ml bottle format is convenient for home use and provides multiple doses.