It is an object of the invention to provide a composition with an excellent action of inhibiting vascularization, as prepared by a simple method suitable for actual production from an inexpensive, relatively readily available material without any problematic
safety profile at an
industrial scale without any complicated purification step. The composition is a composition for inhibiting vascularization, which contains a barley-derived ingredient selected from the group consisting of an unpolished barley ethyl
alcohol extract fraction, an unpolished barley alkali extract fraction and fermented barley (preferably, a residual solution from the
distillation of barley distilled spirits) as the
active component with an action of inhibiting vascularization. The composition for inhibiting vascularization is a composition for therapeutically treating or preventing diseases which vascularization should be inhibited, specifically diseases with an
etiology of abnormal vascularization in tumor or
cancer, chronic
inflammation or
retinopathy. The composition is in a form selected from the group consisting of food additives, food materials, foods and drinks, pharmaceutical products under regulations by the Ministry of Health and Labor in Japan and quasi-pharmaceutical products under regulations by the Ministry of Health and Labor in Japan, and feeds.