Molecular formula :
nature : for the agonist and antagonist can compete the same receptor agonist role so weakened or disappeared. If such antagonism is reversible, dose-agonists increase its antagonistic effect can be overcome, then known as reversible competitive antagonist (reversible competitive antagonism); If it is not reversible, and the receptor antagonist that is formed chelating strong covalent bonding and dissociation is not easy, even if the dose of agonist increase , which is not able to overcome their antagonism, as not reversible competitive antagonist (irreversible competitive antagonism).
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