Gaviscon Advance is the stronger choice for acid reflux, because it contains more alginate and forms a thicker protective layer on top of the stomach contents. Gaviscon Double Action contains alginate plus antacids, so it both forms a layer and neutralises acid, which suits heartburn with indigestion.
What is in each one?
- Gaviscon Advance: sodium alginate and potassium bicarbonate. The alginate forms a raft that floats on the stomach contents and helps stop acid coming back up.
- Gaviscon Double Action: sodium alginate, sodium bicarbonate and calcium carbonate. It forms a raft and the calcium carbonate neutralises acid.
Which should I choose?
- Reflux, acid in the throat, symptoms when lying down: Gaviscon Advance Aniseed, Advance Peppermint, or the larger 500ml bottle.
- Heartburn with a heavy, acidic stomach after eating: Gaviscon Double Action liquid.
- Out and about: Gaviscon Advance chewable tablets.
When do I take it?
After meals and at bedtime, following the dose on the pack.
Is there anything to watch for?
Gaviscon products contain sodium, and Advance contains potassium. Ask a pharmacist first if you are on a low-salt diet, have kidney or heart problems, or take regular medicines. Leave two hours between Gaviscon and other medicines.
When should I see a GP?
If you need it most days for more than two weeks, or have difficulty swallowing, weight loss, vomiting or black stools.
Compare all options in Gaviscon, Rennie or Nexium Control?
General information only. Always read the label.
