Gaviscon Advance Peppermint Flavour Liquid is a 300ml medication that provides fast and powerful relief from heartburn and acid indigestion. This extra strength formula offers long-lasting protection with a refreshing peppermint taste. The liquid formulation contains sodium alginate and potassium bicarbonate that work together to form a protective barrier on top of stomach contents, preventing acid reflux. The 300ml bottle size is convenient for home use and provides multiple doses. Always follow the recommended dosage instructions and consult a healthcare professional if symptoms persist.