The present invention provides a composition having an inhibitory effect on the influenza virus infection. An anti-influenza virus agent of the present invention uses an extract as an active ingredient, in which the extract is produced by extracting a poppy plant with water, and then the extracted liquid is subjected to a lyophilizing process to thereby purify the extract. The poppy extract of the present invention is believed to promote the IgA secretion effect and the inhibitory effect of influenza virus infection, it is useful as a new material for strengthening the lozenges functioning and enabling a person to develop a physique insusceptible to influenza infection.本發明提供一種具有流行性感冒病毒的感染抑制效果之組成物。本發明之抗流行性感冒病毒劑以藉由使用水萃取麗春花,並將其萃取液冷凍乾燥而精製所得到的萃取物作為有效成分。
