PROBLEM TO BE SOLVED: To provide an antihypertensive agent.SOLUTION: An antihypertensive agent according to the present invention comprises a globin protein decomposition product comprising at least one peptide selected from the group consisting of peptides comprising amino acid sequences of the following (2)-(4) and (6) as an active ingredient: (2) Trp-Gly-Lys-Val-Asn (sequence number 2)； (3) Trp-Gly-Lys-Val (sequence number 3)； (4) Trp-Gly-Lys (sequence number 4)； and (6) Phe-Glu-Ser (sequence number 6).SELECTED DRAWING: None【課題】本発明は血圧降下剤を提供する。【解決手段】本発明の血圧降下剤は、下記(2)～(4)及び(6)に示すアミノ酸配列からなるペプチドよりなる群から選択される少なくとも１種のペプチドを含有するグロビン蛋白分解物を有効成分とする：(2) Trp-Gly-Lys-Val-Asn（配列番号２）(3) Trp-Gly-Lys-Val（配列番号３）(4) Trp-Gly-Lys（配列番号４）(6) Phe-Glu-Ser（配列番号６）。【選択図】なし
