Desmopressin is a synthetic analog of ADH. It is preferred over arginine vasopressin in the treatment of diabetes insipidus for all of the following reasons EXCEPT:: (A) It is a more potent antidiuretic, (B) It is a selective vasopressin V1 receptor agonist, (C) It has a little vasoconstrictor activity, (D) It is longer acting
Answer is B. Vasopressin can act on V1 and V2 receptors whereas desmopressin is a selective V2 receptor agonist. Desmopressin: It is a more potent antidiuretic It is longer acting It has a little vasoconstrictor activity