H2 antagonist


variants or H2 receptor antagonist also H2 blocker
: a drug (as cimetidine, famotidine, nizatidine, or ranitidine) that reduces or inhibits the secretion of gastric acid by binding competitively with histamine to H2 receptors on cell membranes

Dictionary Entries Near H2 antagonist

H1 receptor

H2 antagonist

H2 receptor

Cite this Entry

“H2 antagonist.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/H2%20antagonist. Accessed 7 Dec. 2023.

Love words? Need even more definitions?

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