Pharmacologic Substance
antacid Audio
ant·ac·id [ ant-as-id ]
Subclass of:
Molecular Mechanisms of Pharmacological Action; Gastrointestinal Agents
Definitions related to antacids:
  • Group of agents that counteract or neutralize acidity, used mainly for the treatment of gastrointestinal irritation or ulcers.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Substances that counteract or neutralize acidity of the GASTROINTESTINAL TRACT.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • (antacid preparation) Natural or synthetic compounds or mixtures, Antiacid Preparations such as sodium bicarbonate, sodium citrate, and phosphate salts act as proton acceptors, neutralizing the acidity of a biologic environment (skin, gastric content, urine, etc.) and raising the pH. These agents are used topically or systemically for management of metabolic acidosis, improved muscle contraction, and hyper-acidic conditions (preventing, counteracting, or neutralizing stomach acidity). (NCI04)
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Antacid, any substance, such as sodium bicarbonate, magnesium hydroxide, calcium carbonate, or aluminum hydroxide, used to counteract or neutralize gastric acids and relieve the discomfort caused by gastric acidity. Indigestion, gastritis, and several forms of ulcers are alleviated by the use of...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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