The growth hormone secretagogue hexarelin stimulates the hypothalamo-pituitary-adrenal axis via arginine vasopressin. - Korbonits,M.; Kaltsas,G.; Perry,L.A.; Putignano,P.; Grossman,A.B.; Besser,G.M.; Trainer,P.J. (J Clin Endocrinol Metab, 1999)