It is an object of the present invention to provide a growth hormone secretagogue that is excellent in effect of promoting secretion of a growth hormone and is orally available. The growth hormone secretagogue of the present invention contains one or more selected from the group consisting of S-adenosylmethionine and/or a salt thereof, a Siberian larch extract, an olive extract, and a stilbene-based compound as an active ingredient. S-adenosylmethionine and/or the salt thereof may be a form itself of chemically synthesized S-adenosylmethionine and/or the salt thereof, or may be a microbial cell or a culture containing S-adenosylmethionine and/or the salt thereof. The stilbene-based compound may be an extract extracted from a Vitaceae plant or a Gnetaceae plant. The olive extract may be an extract separated from a fruit of olive.