The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical
composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the
pharmaceutical industry.
Tolvaptan is a selective vasopressin V2-receptor antagonist that specifically blocks the binding of arginine vasopressin (AVP) at the V2-receptor of the distal portions of the nephron. Tolvaptan affinity for the human V2-receptor is 1.8 times that of native AVP.
