Provided is a packaged effervescent beverage having a high concentration of catechins, having both reduced bitterness and adequate sweetness, and not undergoing a substantial reduction in the catechin content even after long storage albeit containing a sweetener.The packaged effervescent beverage having a purified product of tea extract added thereto, comprising: (A) from 0.08 to 0.5 mass % of non-polymer catechins, (B) from 0.0001 to 20 mass % of a sweetener, and (C) a carbon dioxide gas, whose gas volume ranges from 0.5 vol. % to 4.0 vol. %, wherein: (D) a non-epicatechin percentage in the non-polymer catechins is from 5 to 25 mass %, a percentage of (E) gallates in (A) the non-polymer catechins ([(E)/(A)]×100) is from 5 to 55 mass %, (F) the beverage has a pH of from 2.5 to 5.1; and a mass ratio of (G) caffeine to (A) the non-polymer catechins [(G)/(A)] is from 0.0001 to 0.16.