Lysipressin Acetate is an analog of Vasopressin, a powerful vasopressor used to modulate blood pressure. An endogenous antidiuretic hormone in most mammalian species. It is released into the blood from nerve terminals in the posterior pituitary and median eminence. It is a neurotransmitter in the central nervous system and also implicated in a variety of physiological processes such as regulating water balance by antidiuretic action.