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Quick summary

Type of medicine

Gastrointestinal (GI) medicine

Works by

Gaviscon works by forming a foam-like layer on top of the stomach’s contents, preventing acid from rising into the oesophagus. This is made possible by its key ingredient, sodium alginate, which reacts with stomach acid to create a protective barrier. At the same time, antacids such as calcium carbonate and sodium bicarbonate neutralise excess acid, providing further relief from burning sensations and discomfort. Unlike some traditional antacids, Gaviscon doesn’t just neutralise stomach acid - it actively prevents reflux, offering longer-lasting protection.

Active Ingredient

Sodium Alginate, Sodium Bicarbonate and Calcium Carbonate

Effective within

Generic

Yes

Side effects

In rare cases, some people may experience constipation or diarrhea. If you experience any other side effects not mentioned here, speak with your healthcare provider.

Medication details

Description

Gaviscon chewable tablets offer fast and effective relief from heartburn and indigestion. These convenient tablets are designed to neutralise excess stomach acid and form a protective barrier, preventing acid from rising into the oesophagus and causing discomfort. Whether you've indulged in a hearty meal or are experiencing symptoms during pregnancy, Gaviscon chewable tablets can help soothe the burning sensation and provide long-lasting comfort.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on Apr 11, 2026, 3:00 pm

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