antacid, any one of several basic substances that counteract stomach acidity (see stomach stomach, saclike dilation in the gastrointestinal tract between the esophagus and the intestines , forming an organ of digestion. The stomach is present in virtually all vertebrate animals and in many invertebrates.
..... Click the link for more information. ). Antacids are used by physicians to treat hyperchlorhydria, i.e., the excessive production of hydrochloric acid by the parietal cells lining the stomach. Commonly used antacid preparations, most sold without prescription, contain sodium bicarbonate, magnesium hydroxide, or aluminum hydroxide. Some preparations contain substances such as magnesium trisilicate that reduce the formation of gas.

antacid

Any substance, such as sodium bicarbonate, magnesium hydroxide, or aluminum hydroxide, used to relieve the discomfort caused by indigestion, gastritis, and several forms of ulcers. Antacids counteract or neutralize gastric acidity for up to three hours after a single dose. Antacids should be taken when gastric acidity is most likely to be increasing—namely, between one and three hours after each meal and at bedtime.

antacid

1. a substance used to neutralize acidity, esp in the stomach

2. having the properties of this substance

antacid [′ant′as·əd]

(chemistry)

Any substance that counteracts or neutralizes acidity.

antacid (redirected from gastric antacid)

antacid

antacid
(redirected from gastric antacid)