Cumberland Pharmaceuticals, Inc. has acquired Vaprisol from Astellas Pharma US, Inc. Vaprisol is one of two branded prescription products indicated for the treatment of hyponatremia, an electrolyte disturbance associated with congestive heart failure, liver failure, kidney failure and pneumonia. The product was developed and registered by Astellas and was launched in 2006.    Cumberland will assume full responsibility for marketing, distribution and manufacture. Cumberland will promote Vaprisol ...