loratadine

noun
lo·​rat·​a·​dine | \ lə-ˈrat-ə-ˌdēn How to pronounce loratadine (audio) , -ˌdīn How to pronounce loratadine (audio) \

Medical Definition of loratadine

: a long-acting, nonsedating antihistamine drug C22H23ClN2O2 taken orally to relieve the symptoms of seasonal allergic rhinitis and chronic urticaria

Note: Loratadine is an H1 antagonist that binds competitively with histamine to H1 receptors on cell membranes. It is marketed under the trademark Claritin.

Learn More About loratadine

Cite this Entry

“Loratadine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/loratadine. Accessed 18 Jun. 2021.

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