Arginine vasopressin (AVP), also known as vasopressin, argipressin or antidiuretic hormone (ADH), is a neurohypophysial hormone found in most mammals, including humans. It is derived from a preprohormone precursor that is synthesized in the hypothalamus...
http://en.wikipedia.org/wiki/Vasopressin_analogue
Vasopressin analogues are chemicals similar in function but not necessarily similar in structure to vasopressin (ADH), such as desmopressin.
http://en.wikipedia.org/wiki/Vasopressin
Vasopressin analogues... used therapeutically in various conditions, and its long-acting synthetic analogue desmopressin is used in conditions featuring low vasopressin secretion
on supporting the hypothalamus... some interesting article titles
"Centrally administered murine-leptin stimulates the hypothalamus-pituitary-adrenal axis through arginine-vasopressin"
"Human leptin levels are pulsatile and inversely related to pituitary-ardenal function"
"Role of leptin in hypothalamic–pituitary function"
how to increase leptin..
Zinc May Regulate Serum Leptin Concentrations in Humans
Zinc restriction decreased leptin levels while zinc supplementation of zinc-depleted subjects increased circulating leptin levels.