Arginine Vasopressin is a form of vasopressin obtained from most of mammals including man but excluding pig. It is usually prepared synthetically. It has a direct antidiuretic action on the kidney, increasing tubular reabsortion of water. It also constricts peripheral blood vessels and causes contraction of the smooth muscle of the intestine, gallbladder and urinary bladder.
Uses: Central diabetes insipidus. Oesophageal varices. Cardiopulmonary resuscitation.

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