Generic DDAVP is a man-made form of a hormone that occurs naturally in the pituitary gland. This hormone is important for many functions including blood flow, blood pressure, kidney function, and regulating how the body uses water. Generic DDAVP is used to treat bed-wetting, central cranial diabetes insipidus, and increased thirst and urination caused by head surgery or head trauma.

Nocdurna (Desmopressin ) is used to treat patients who awaken 2 or more times at night to urinate caused by nocturnal polyuria, a condition wherein your body makes too much urine at night. Desmopressin is a man-made form of a hormone that occurs naturally in the pituitary gland and regulates how the body uses water.

Tolvaptan reduces the level of a hormone that regulates the balance of water and salt (sodium) in the body. High levels of this hormone can cause an imbalance that results in low sodium levels and fluid retention. Tolvaptan is used to treat hyponatremia (low levels of sodium in your blood) in people with heart failure, and certain hormonal imbalances. Tolvaptan improves urine flow without causing the body to lose too much sodium as you urinate.