NCI Drug Dictionary

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The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

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fexofenadine hydrochloride
The hydrochloride salt form of fexofenadine, a carboxylated metabolic derivative of terfenadine and third generation selective histamine H1-receptor antagonist with antihistaminic and non-sedative effects. Fexofenadine competitively binds peripheral H1-receptors, thereby stabilizing an inactive conformation of the receptor. Consequently histamine binding and activity as a result of mast-cell degranulation followed by the release of multiple inflammatory mediators, such as interleukins, prostaglandin and leukotriene precursors, is blocked, thereby preventing the triggering of pro-inflammatory pathways. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:fexofenadine HCl
US brand name:Allegra