Any drug used to combat oesophageal reflux[?]. Commonly, following ingestion a 'raft' of alginic acid is created, floating on the stomach contents by carbon dioxide released by the drug. This forms a mechanical barrier to further reflux. Some preparations also contain antacids to protect the oesophagus.
... retreat toward Manchuria followed by 100,000 Japanese troops.
April 30 - Louisiana Purchase Exposition World's Fair opens in Saint Louis, Missouri (closes December 1)
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