Wakunaga Pharmaceutical Co., Ltd.

Wakunaga Seiyaku Kabushiki Kaisha

Mitsuyasu Ushijima

Yukihiro Kodera

Naoaki Morihara

Satoshi Inoue

Terukage Hirata

Kayo Kunimura

Miyuki Takashima

Naoyuki Takasugi

Provided is a blood flow improver which is safe and has a mild action. The blood flow improver comprises S-1-propenylcysteine or a salt thereof as an active ingredient.

Blood flow improver

Provided is an antihypertensive agent that is safe and has a mild effect. An antihypertensive agent comprising S-1-propenylcysteine or a salt thereof as an active ingredient.

Antihypertensive agent

Disclosed herein is a cerebral-circulation-metabolism-function-improving agent which contains a 2,6-diphenyl-3,7-dioxabicyclo[3.3.0]octane derivative represented by the following formula as the effective ingredient: ##STR1## wherein, each of R.sub.1, R.sub.3, R.sub.4 and R.sub.6 represents a hydrogen atom or a lower alkoxyl group; each of R.sub.2 and R.sub.5 represents a hydrogen atom, a .beta.-D-glucosyl group or a hydroxyl group; and each of R.sub.7 and R.sub.8 represents an oxygen atom or two hydrogen atoms.

Method for improving cerebral circulation

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Hiroshima, Japan

Mitsuyasu Ushijima