To provide a beverage packaged in a transparent container capable of inhibiting functional components contained in a liquid beverage from being decomposed and deteriorated by irradiation with light during storage.SOLUTION: The beverage 1 packaged in a container including a transparent container for packaging a liquid beverage containing functional components such as vitamins, a cap for sealing the transparent container, and a thermally shrinkable light shielding plastic film 5 for covering the whole of transparent parts from a lower end of the transparent container up to a cap part 11 excluding a bottom face side of the transparent container in a state where the liquid beverage is sealed in the transparent container to prevent the liquid beverage from being irradiated with light and functional components contained therein from being subjected to photodecomposition.SELECTED DRAWING: Figure 2【課題】液体飲料に含まれる機能性成分について、保管中の光の照射による分解・劣化が抑制された透明容器入り飲料を提供する。【解決手段】ビタミン等の機能性成分を含有する液体飲料を包装するための透明容器と、透明容器に蓋をするキャップと、液体飲料が透明容器に封入された状態で、透明容器の下端からキャップ部11まで透明容器の底面側を除く透明部分を全体的に被覆して液体飲料に光が照射されて機能性成分が光分解されることを防ぐ熱収縮性の遮光性プラスチックフィルム5とを備えた容器入り飲料1。【選択図】図2