As we are facing pandemia of type 2 diabetes mellitus new methods of treatment are searched. In patients with type 2 diabetes mellitus serum ghrelin levels are decreased. Ghrelin is a substance with multidimensional influence, that takes part in central and peripheral metabolism regulation, stimulates pituitary gland hormones release and increases cardiac output and decreases peripheral vascular resistance. Ghrelin also regulates gastric emptying and memory processes. Regarding ghrelin’s wide biologic functions, the use of ghrelin antagonists only in the matter of metabolism seems to be difficult to achieve and unpredictable. Researches on ghrelin antagonists as new drugs in type 2 diabetes mellitus are presently running.