Health / Medical Topics |
Fexofenadine Hydrochloride
Definition 1
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. (NCI Thesaurus)
Definition 2
A drug used to treat certain allergy symptoms. It blocks a chemical released during an allergic response that causes itching, sneezing, runny nose, wheezing, and watery eyes. It is a type of antihistamine. (NCI Dictionary)