Need emergency help? Call 999 in United Kingdom.

Open local help

Detailed medicine guidance

Who can and cannot take gaviscon

NHS medicines information on who can take Gaviscon and who may not be able to take it.

About this information

This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.

Who can take Gaviscon

Most adults and children 12 years old and over can take Gaviscon.

Children under 12 years old can only take it if it's been prescribed by a doctor.

Who may not be able to take Gaviscon

Gaviscon is not suitable for some people. To make sure it’s safe for you, check with your doctor or pharmacist before starting it if you have:

  • ever had an allergic reaction to Gaviscon or any other medicine
  • been advised to eat a low calcium or low salt (low sodium) diet
  • kidney, liver or heart disease
  • a rare, inherited illness called phenylketonuria
  • low levels of phosphate in your blood

Children under 12

Gaviscon should only be given to children under 12 years if it’s been prescribed or recommended by a doctor.

View the original NHS website page ↗. Refreshed 19 August 2026.

Licensed under the Open Government Licence v3.0 ↗. MyPHU is independent and is not endorsed by the NHS.

More about Gaviscon