Antidiuretics

Antidiuretics are APIs that reduce urine production by enhancing water reabsorption in the kidneys, primarily through modulation of vasopressin receptors or aquaporin channels. Key agents include desmopressin and vasopressin analogs, used to treat central diabetes insipidus, nocturnal enuresis, and conditions requiring controlled antidiuresis. Their mechanisms involve stimulating V2 receptors in the renal collecting ducts, increasing cyclic AMP levels, and promoting insertion of aquaporin-2 channels into tubular membranes. Antidiuretics help restore water balance, prevent dehydration, and improve quality of life in patients with impaired antidiuretic hormone secretion. Because of the risk of hyponatremia, therapy requires careful monitoring of electrolytes and fluid intake.