Vaptans
The vasopressin receptor antagonists, dubbed vaptans, target the vasopressin hormonal feedback system. Vasopressin, also called the anti-diuretic hormone or ADH, is an important part of regulation in the circulatory system and is integral to the balance of water in the body. As a fundamental part of hormonal control in the body, it is implicated in many different conditions. Vaptans can be administered orally or intravenously. They work by competing for the active sites on cells meant for vasopressin binding—in this way, the vasopressin is blocked from acting, which earns the title of vasopressing antagonists.
Read more about this topic: Lixivaptan