Loratadine
Brand/Trade Names: Alavert, Claritin, Claritine, Clarityn, Clarityne
Description: Loratadine, a non-sedating H1-blocker similar in structure to cyproheptadine and azatadine, is used to treat seasonal allergic rhinitis. Unlike other H1-blockers, loratidine does not penetrate the CNS effectively and has a low affinity for CNS H1-receptors.
Like other H1-blockers, loratadine competes with free histamine for binding at H1-receptors in the GI tract, uterus, large blood vessels, and bronchial muscle. Loratadine also has a weak affinity for acetylcholine and alpha-adrenergic receptors.
Uses: For the relief of nasal and non-nasal symptoms of seasonal allergic rhinitis and for the treatment of chronic idiopathic urticaria in patients 2 years of age or older.

Additional Information Data And Resources:
Claritin-D Patient Information Leaflet
MedlinePlus Loratadine Information
