A competitive antagonist is a substance that
In the presence of a fixed concentration of agonist, increasing concentrations of a competitive antagonist progressively inhibit the agonist responseBasic and clinical pharmacology Katzung 13th edition pg 23
Interacts with receptors and produces submaximal effect
Binds to the same receptor site and progressively inhibits the agonist response
Binds to the nonspecific sites of tissue
Binds to one receptor subtype as an agonist and to another as an antagonist
General pharmacology