Fast powerful relief from heartburn. Extra strength formula.

Symptoms treated:

  • Burning in chest
  • Bloating
  • Sour taste in the mouth
  • Difficulty swallowing
Choose format
Available flavours
  • Peppermint
Available sizes
  • 120ml

Product Description

Gaviscon Advance contains double the concentration of sodium alginate and forms a stronger more resilient raft compared to Gaviscon Original over the stomach contents, which helps prevent acid coming back up into the oesophagus (food pipe).

*The effect on individuals may vary.


  • Sodium alginate
  • Potassium bicarbonate

Heartburn in pregnancy: what is it and what causes it?

This is Gaviscon’s guide to understanding the causes, symptoms, and treatments of a common side-effect of pregnancy.

Read more

How Gaviscon Advance works

Gaviscon Advance forms a protective barrier that helps keep stomach acid from rising back up the oesophagus (food pipe).

We know how disruptive heartburn and acid reflux can be, which is why Advance is designed for long-lasting relief (up to 4 hours)- to help you get on with your day.

Gaviscon Advance’s extra strength formulation has twice the concentration of sodium alginate - forming a strong and resilient ‘raft’ in the process.

The liquid formulation does not contain sugar or gluten and can be taken during pregnancy or breast-feeding.
What’s more, Advance has the lowest sodium content of any product in the Gaviscon range.

Sodium Alginate

Sodium alginate is extracted from the cell walls of seaweed. It helps the stomach block rising acid, the root cause of the discomfort heartburn and indigestion sufferers know so well.


Gaviscon Advance is our best formulation if you are pregnant or breast feeding. It’s lower in sodium and the extra-strength formula is designed to help you get on with your day.

Medicine can affect the unborn baby. Always talk to your doctor or pharmacist before taking any medicine during pregnancy.

Never exceed the dosage information on the back of the product. Try to take these after meals. If symptoms do not improve after 7 days you should consult your doctor

It’s very common. In fact up to 80% of expectant mothers get these symptoms at one stage or another. Your growing bump, alongside the hormonal changes happening in your body, make it a common occurrence. Read more on our pregnancy page.