In patients with euvolemic or hypervolemic hyponatremia, tolvaptan, an oral vasopressin V2-receptor antagonist, was effective in increasing serum sodium concentrations at day 4 and day 30.
In patients with euvolemic or hypervolemic hyponatremia, tolvaptan, an oral vasopressinV2-receptor antagonist, was effective in increasing serum sodium concentrationsat day 4 and day 30.