The subject invention provides a functional oral composition for a diurnal mammal that can be easily and safely ingested at low cost on daily basis, and usage thereof. The functional oral composition of the present invention is characterized in that the functional oral compositions are packaged in separated or fractionated portions on a daily-dose basis, and that the dose per day of the functional oral composition with respect to a single diurnal mammal contains, in total, 0.3 mg to 5 g of polyphenol, preferably cacao polyphenol.本發明提供可日常簡便、安全且便宜地攝取之晝行性哺乳動物用之機能性口服組成物以及其用法。本發明之機能性口服組成物之特徵係以劃分或分割為每1日投予量之狀態包裝，且於晝行性哺乳動物1個體之每1日投予量中總量含有0.3mg~5g之多酚，較好含有可可多酚(cacao polyphenol)。
