Two Drugs having opposite action on different receptor is which type of antagonism: (A) Psychological antagonism, (B) Physical antagonism, (C) Competitive antagonism, (D) Non Competitive antagonism
Answer is A. Ref-KDT 7/e p58 Physiological antagonism describes the behavior of a substance that produces effects counteracting those of another substance (a result similar to that produced by an antagonist blocking the action of an agonist at the same receptor) using a mechanism that does not involve binding to the same receptor.