<;P>;PROBLEM TO BE SOLVED: To develop a material that can be simply incorporated into a daily meal to promote and/or improve bloodstream; and to provide a composition in a form permitting industrially effective utilization of the same. <;P>;SOLUTION: The bloodstream-promoting/improving agent comprises as an effective ingredient an aqueous component of defatted lees of a fruit and/or a seed of Camellia japonica belonging to the genus Camellia of the family Theaceae. An oral composition, preferably food and drink, for promoting and/or improving bloodstream comprising the agent is provided. <;P>;COPYRIGHT: (C)2011,JPO&INPIT