<prompt> When the drug binds to the receptor and causes action opposite to that of agonist is called asComplete agonistPaial agonistInverse agonistNeutral agonist  <response>: In pharmacology, an inverse agonist is a drug that binds to the same receptor as an agonist but induces a pharmacological response opposite to that of the agonist Ref-KDT 7e p42 