The flowers of corn poppy have a long history of medicinal usage, especially for ailments in the elderly and children.  Chiefly employed as a mild pain reliever and as a treatment for irritable coughs, it also helps to reduce nervous over-activity   Unlike the related opium poppy (P. somniferum) it is non-addictive.  However, the plant does contain alkaloids, which are still under investigation, and so should only be used under the supervision of a qualified herbalist.