desloratadine poor metabolizers. In these people, the drug reaches threefold highest plasma concentrations six to seven hours after intake, and has a half-life of about 89 hours. However, the safety profile for these subjects is not worse than for extensive (normal) metabolizers. See also Benzocycloheptenes Azatadine References External links Benzocycloheptapyridines Chloroarenes H1 receptor antagonists Human drug metabolites Peripherally selective drugs Piperidines Schering-Plough brands Merck & Co. brands