agonist
chemical substance which, upon binding to a receptor, leads to its activation
Endogenous agonist
agonist of some receptor subtype that's produced in the living organism, tissue or cell
irreversible agonist
type of agonist that binds permanently to a receptor in such a manner that the receptor is permanently activated. It is distinct from a mere (reversible) agonist in that the association of an agonist to a receptor is reversible
Vasopressin receptor agonist
chemicals similar in function but not necessarily similar in structure to vasopressin
glycine receptor agonist
class of compounds
Partial agonist
compound that binds to and activates a receptor with partial efficacy
adenosine receptor agonist
class of compounds
Gonadotropin-releasing hormone agonist
drug class affecting sex hormones