To save this word, you'll need to log in.
lo·rat·a·dine | \ lə-ˈrat-ə-ˌdēn 
, -ˌdīn \
, -ˌdīn \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.
Comments on loratadine
What made you want to look up loratadine? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
A More Exception(al) Quiz
- Which of the following words is not a synonym for ‘a young person’?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share loratadine