Also known as Vaprisol
Conivaptan (YM 087, brand name Vaprisol) is a non-peptide inhibitor of antidiuretic hormone (vasopressin receptor antagonist). It was approved in 2004 for hyponatremia (low blood sodium levels) caused by syndrome of inappropriate antidiuretic hormone (SIADH), and there is some evidence it may be effective in heart failure. It is marketed by Astellas Pharma Inc.Source: Wikipedia
Patients are most commonly prescribed conivaptan to treat rabies, blastomycosis, west nile virus, and pick disease.
Patients taking conivaptan most commonly experience side effects like hypokalemia, orthostatic hypotension, and fever.