Gaviscon Double Action Tablets

Help treat your symptoms with Gaviscon Double Action and get fast dual relief from heartburn and indigestion.

Symptoms treated:

  • Burning in chest
  • Bloating
  • Sour taste in the mouth
Choose format
Available flavours
  • Peppermint
  • Mixed Berry
Available sizes
  • 24
  • 48

Dosage & Instructions

For oral use, after being thoroughly chewed.

Adults and children 12 years and over, take two to four tablets after meals and at bedtime, up to four times a day.

Children under 12 years: Should only be taken on medical advice.

If symptoms persist after 7 days consult your doctor.

  • Do not use this product after the expiry date (month/year).
  • Always read the label

Active Ingredients

250mg Sodium alginate (per tablet) 106.5mg Sodium bicarbonate (per tablet) 187.5mg Calcium carbonate (per tablet) Allergens Gluten free Sugar free Vegan Friendly


Gaviscon Double Action provides dual relief from heartburn and indigestion symptoms and is formulated to work in two ways. It not only creates a protective barrier over your stomach to stop refluxing acid causing discomfort, it also neutralises excess stomach acid. This effective two-pronged approach helps to relieve you from discomfort.

Stress can be a contributor - which is all the more reason to adopt healthy ways of dealing with stress. It depletes prostaglandins in our body, which protect us from stomach acid.

Try to:

  • Get a good night’s sleep. A lack of sleep can lead to higher stress levels
  • Exercise - this boosts wellbeing.
  • Eat more slowly and mindfully
  • Try to avoid unhealthy lifestyle habits

You might also try reducing your meal-sizes and watching how much spicy food you eat (a trigger).

Pregnant mothers are also much more likely to suffer from heartburn and indigestion. A growing baby bump puts pressure on your system, and makes refluxing acid a very common reality of pregnant life.

If you’re suffering from heartburn twice-weekly or more, you could consider pairing Gaviscon Double Action with Guardium.

Guardium is designed to provide long-lasting relief for recurrent sufferers. Please have a look at our Guardium page to find out more.

How Gaviscon Double Action works

Gaviscon Double Action is the best-selling product in the Gaviscon family3, and it is effective in providing relief from heartburn and indigestion. Gaviscon Double Action contains calcium carbonate and its unique formulation helps provide effective relief that is up to x2 longer than regular antacids*.

Gaviscon Double Action gets to work instantly in two different ways:

1. Through its antacid component, it neutralises excess stomach acid to help relieve discomfort.

2. Through the alginate (refined from seaweed), it forms a protective barrier over the stomach contents to soothe the burning sensation in your chest and help prevent reflux.

Gaviscon’s liquid formulation does not contain sugar or gluten and you can take this product if you are pregnant or breast-feeding while benefiting from dual relief from heartburn and indigestion.

3Double Action best-selling product in range. Nielsen unit sales data YTD WE 26/12/2020

What can cause heartburn?

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.