diphenhydramine hydrochloride

{
  "id": "MLC-T-ONC-013068",
  "term": "diphenhydramine hydrochloride",
  "field": "Oncology and biomedicine",
  "definition": "The hydrochloride salt form of diphenhydramine, an ethanolamine and first-generation histamine antagonist with anti-allergic activity. Diphenhydramine hydrochloride competitively blocks H1receptors, thereby preventing the actions of histamine on bronchial smooth muscle, capillaries, and gastrointestinal (GI) smooth muscle. This prevents histamine-induced bronchoconstriction, vasodilation, increased capillary permeability, and GI smooth muscle spasms.",
  "references": [
    "National Cancer Institute Thesaurus"
  ],
  "url": "https://mlchart.com/terminology/oncology/diphenhydramine-hydrochloride/"
}