There are several brands with different active ingredients. Active ingredients:
Esomeprazole
Pantoprazole
Rabeprazole
Omeprazole

Note: Proton-pump inhibitors decrease the amount of acid made by the stomach, to give relief of symptoms of acid reflux / heartburn.
This does NOT stop food being digested in the normal way.
The different active ingredients have different strengths and dosage regimes.
Patients with frequent (once or twice a week) episodes of heartburn or medically diagnosed GORD.
https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent&id=CP-2010-CMI-05172-3&d=20231022172310101

Sodium Bicarbonate
Calcium Carbonate
Sodium Alginate

Note: There is a maximum daily dose of all antacids, check on the product instructions. An overdose can adversely affect the whole body.
The dosage will depend upon the age of the patient and can be taken after meals and before going to bed, up to 4 times a day.

Note: The Sodium Alginate forms a layer, or raft, on top of the stomach contents, thereby forming a physical barrier that helps keep the stomach contents in the stomach.
Patients with occasional acid reflux / heartburn

Ginger, Liquorice and Chamomile

More information:

Calcium Carbonate
Magnesium Hydroxide
Magnesium Trisilicate
Magnesium Carbonate

Note: There is a maximum daily dose of all antacids, check on the product instructions. An overdose can adversely affect the whole body.
The dosage will depend upon the individual product chosen, the age of the patient and the frequency of dosing – these will all be specified on the product instructions.
Patients with occasional acid reflux/ heartburn.