Tolvaptan (Jynarque)

Tolvaptan (Jynarque) is part of the Vaptans class and treats Kidney Disease. Vaptans, or vasopressin receptor antagonists, are used to treat hyponatremia, or abnomally low levels of sodium in the blood. Vaptans can also slow the progression of certain kidney diseases. They work by inhibiting the effect of vasopressin in the body. Vasopressin is a hormone that helps regulate the body's water retention, blood pressure, blood sodium levels, and kidney function. Tolvaptan (Jynarque) is only available as a generic drug.