By mixing an amino acid in a packed beverage containing non-polymer catechins in high concentration, the physiological effects of the catechins are manifested and the intake of the amino acid is facilitated. A packaged beverage containing:(A) from 0.06 to 0.5 % by mass of non-polymer catechins(B) from 0.01 to 5.0 % by mass of at least one amino acid selected from L-isoleucine, L-leucine, L-valine, L-threonine, DL-methionine, L-methionine, L-histidine, L-phenylalanine, L-lysine, L-tryptophan, L-aspartic acid, L-glutamic acid, L-alanine, DL-alanine, glycine, L-asparagine, L-glutamine, L-arginine, L-serine, L-tyrosine, L-cystine and L-proline, or a salt thereof and(C) from 0.0001 to 20 % by mass of a sweetener,wherein (G) a percentage of gallate bodies in the non-polymer catechins is from 5 to 55 % by mass, and pH is from 2.5 to 5.1.
