Sodium Alginate+Sodium Bicarbonate+Calcium Carbonate (Gaviscon Double Action)

Treat your symptoms in as fast as 5 minutes with Gaviscon Double Action and get dual relief from heartburn and indigestion for up to 4 hours.

Symptoms treated:

  • Burning in chest
  • Bitter or acidic taste in your mouth or throat
  • Pain or discomfort on the top of stomach
  • Nausea or feeling of vomiting
  • Discomfort associated with burping
Choose format
Available flavours
  • Peppermint
Available sizes
  • 12

Dosage & Instructions

Adults and children 12 years and over: 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.

  • Keep out of the reach and sight of children.
  • This medicine contains sodium, sodium bicarbonate and calcium. If you have been advised to follow a diet restricted in either of these salts please consult your doctor before taking these salts.
  • Do not use this product after the expiry date (month/year).
  • Always read the label.

Active Ingredients

Sodium alginate 250mg, calcium carbonate 106.5mg, sodium bicarbonate 187.5mg per chewable tablet

How Gaviscon Double Action works

Gaviscon Double Action is the best-selling product in the Gaviscon family, and it earns this status for its effectiveness in providing relief from heartburn and indigestion. Gaviscon Double Action utilizes more calcium carbonate with a higher level of antacid - giving you up to 2x longer relief than regular antacids.

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

  1. Through the alginate (refined from seaweed), it forms a protective barrier over the stomach contents to soothe the burning sensation in your chest and prevent reflux
  2. Through its antacid component, it neutralizes excess stomach acid to help relieve discomfort.

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

A sodium alginate solution

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 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 neutralizes excess stomach acid. This effective two-pronged approach helps to relieve you from discomfort.

Stress is a big contributor. 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 trigger more cortisol to circulate your system. Cortisol is the stress hormone, and even a minor disruption to your usual sleeping patterns can cause high levels of cortisol in the body up to 24 hours later.
  • Exercise - this boosts wellbeing.
  • Eat more slowly and mindfully.
  • Steer clear of 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 acid reflux a very common reality of pregnant life.