Alginates
An alginate is present in some antacids, as the medication coats the gullet with a protective layer.
Antacids, with or without alginates, are best used as preventative measures.
The best times to take them is alongside meals, soon after meals, or just before going to bed when symptoms might flare-up.
Proton pump inhibitors (PPI)
“Proton pumps are enzymes in the lining of your stomach that help it make acid to digest food,” the NHS noted.