To obtain an active oxygen eliminating action agent or an aldose reductase inhibitory action agent having no problems such as tachyphylaxis and various adverse effects shown in the case of a medicine synthesized by a conventional chemical means.
This active oxygen eliminating action agent comprises a component derived from Syzygium jambos as an active ingredient. This aldose reductase inhibitory action agent comprises also the component derived from Syzygium jambos as an active ingredient. These agents are effective for preventing and treating various diseases induced by oxidative damage in vivo and also effective for preventing and treating diabetic complication such as diabetic cataract, renal insufficiency, nervous disorder, arteriosclerosis, etc.
MITSUNAMI HIROYUKI
FUKUYAMA YOSHIYASU
YOSHIZAWA TOYOKICHI