clemastine

noun
clem·​as·​tine | \ ˈklem-ə-ˌstēn How to pronounce clemastine (audio) \

Medical Definition of clemastine

: an antihistamine drug administered orally in the form of its fumarate C21H26ClNO·C4H4O4 to relieve the symptoms of hay fever and the common cold … oral antihistamines, such as chlorpheniramine and clemastine, reduce sneezing and, to a lesser extent, rhinorrhea, probably because of their anticholinergic effects, but they are often associated with excess sedation.— Frederick G. Hayden, Scientific American Medicine Bulletin, March 1997

Learn More About clemastine

Cite this Entry

“Clemastine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/clemastine. Accessed 24 Jul. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!