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Data Show Vaprisol(R) Is Effective & Safe in Promptly Increasing Serum Sodium Levels in Patients With Euvolemic or Hypervolemic Hyponatremia
Date:10/10/2007

ses in [Na+]. Also, no cases of osmotic demyelination syndrome were reported from patients who experienced an overly rapid increase in [Na+] in either study.

About Hyponatremia

Hyponatremia often results from elevated levels of the hormone arginine vasopressin (AVP), which regulates water and salt balance in the body. It is the most common electrolyte disorder in clinical medicine.

Syndrome of inappropriate antidiuretic hormone (SIADH), advanced kidney failure, hypothyroidism, cancer and chronic high blood pressure are common causes of hyponatremia. Dilutional hyponatremia, which includes euvolemic and hypervolemic hyponatremia, is the most common form of the condition, and occurs when retained water dilutes serum sodium content. Patients with hyponatremia are classified as hypervolemic if swelling of body tissues (edema) is present or euvolemic if there is an increase in total body water content without edema.(1,2)

About VAPRISOL

Discovered and developed by Astellas Pharma Inc. headquartered in Tokyo, Japan, VAPRISOL is a novel drug that blocks the activity of AVP, resulting in increased urine output without loss of valuable electrolytes such as sodium and potassium. This effect, known as "aquaresis," helps to increase serum sodium levels in patients with hyponatremia, a condition of low serum sodium concentration, due to increased body water (dilutional hyponatremia). VAPRISOL is the first AVP receptor antagonist with a demonstrated safety profile and that effectively promotes aquaresis which helps to restore salt and water balance in patients with euvolemic and hypervolemic hyponatremia.

VAPRISOL is indicated for the treatment of euvolemic and hypervolemic hyponatremia in hospitalized patients. VAPRISOL is not indicated for the treatment of congestive heart failure. It should only be used for the treatment of hyponatremia in patients with underlying heart failure when the expected benefit of raising serum sodium outweighs the i
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SOURCE Astellas Pharma US
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