Displaying 5 results of Vasopressin Impurities Vasopressin, also known as antidiuretic hormone, is a hormone that regulates water balance in the body. Vasopressin impurities are other substances that may be present in vasopressin preparations, either as a result of manufacturing or storage. These impurities can affect the purity and potency of the vasopressin and may have negative effects on the body if present in high levels. Therefore, it is important to monitor and control the levels of vasopressin impurities in pharmaceutical preparations.