FIELD: food industry.
SUBSTANCE: composition of drink suitable for direct consumption by a person and having functional favourable effect at it, containing (a) from 300 to 3000 weight parts of theanine; and (b) from 200 to 2000 weight parts of caffeine; besides ratio of theanine to caffeine makes from 5:1 to 1:1.5. Also application of drink composition to noticeably improve concentration, cheerfulness and/or mental activity and method for improvement of concentration, cheerfulness and/or mental activity in a person, including oral administration of this composition to a person.
EFFECT: invention makes it possible to produce the drink for a person, which results in considerable improvement of concentration, cheerfulness and/or mental activity.
11 cl, 7 tbl, 3 ex
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