Medical Definition of Antagonist

Antagonist: A substance that acts against and blocks an action. Antagonist is the opposite of agonist. Antagonists and agonists are key players in the chemistry of the human body and in pharmacology.

CONTINUE SCROLLING OR CLICK HERE FOR RELATED SLIDESHOW

SLIDESHOW

Heart Disease: Causes of a Heart Attack See Slideshow

Health Solutions From Our Sponsors

Reviewed on 12/27/2018