Arginine vasopressin (AVP), also known as argipressin or<unk>  <unk> , is a<unk>  found in most mammals, including man. One of its most important roles is to regulate the body's retention of water, being released when the body is dehydrated; it causes the kidneys to conserve water, but not salt, by concentrating the urine and reducing urine volume. It also raises blood pressure by inducing moderate vasoconstriction. In addition, it has a variety of neurological effects on the brain, having been found, for example, to influence pair-bonding in voles.
A very similar substance, lysine vasopressin (LVP) or lypressin, has the same function in pigs and is often used in human therapy.
Vasopressin is a peptide<unk> . It is derived from a preprohormone precursor that is synthesized in the hypothalamus, from which it is liberated during transport to the posterior pituitary. Most of it is stored in the posterior part of the pituitary gland to be released into the blood stream; some of it is also released directly into the brain.
Antidiuretic hormone
Aldosterone
Adrenalone
Testosterone 
Angiotensin II 
Gonadotropins
Cosyntropin
Menotropins