Use of Puerariae Radix Extract for preparation of medication for memory dysfunction are provided, comprising boiling the Puerariae Radix in the water, concentrating the extract product thereof, and administrating effective dose of the Puerariae Radix Extract to a subject in need. The present invention merely uses Puerariae Radix as crude medicinal, which belongs to a Chinese herbal medicine of single drug prescription. Further, with the same amount of Puerarin, Puerariae Radix Extract of the present invention provides a better neuroprotection effect in comparison with Puerarin, which indicates that Puerariae Radix Extract contains more active neuronutrient ingredients other than Puerarin. Therefore, Puerariae Radix Extract is a much potential therapeutic medicine than Puerarin for relieving the symptom of anxiety and the cognitive impairment.本發明提供一種葛根萃取物用於製備記憶障礙的藥物之用途,其包含將葛根於水中蒸煮並濃縮,以及施予有效劑量之該葛根萃取物至需求個體。本發明僅使用葛根作為原料藥材,係屬單方中草藥。進一步地,在相同葛根素含量下,本發明的葛根萃取物,較葛根素更具神經保護之效果,表示葛根萃取物中含有更多其它的神經滋養活性成分,較單一葛根素更具有作為減緩焦慮及認知功能異常之治療藥物的潛力。Aβ25-35‧‧‧寡聚體Aβ25-35
