To provide a beverage-use hydrogen-containing water product, which is capable of maintaining the oxidation-reduction potential thereof at a low level and maintaining the dissolved hydrogen concentration at a high level even after a certain period of time has elapsed after the production thereof. Provided are: a beverage-use hydrogen-containing water product, which comprises an openable container, hydrogen-containing water that is filled in the container and sealed therein, and a hydrogen concentration reduction inhibitor that is dissolved in the hydrogen-containing water； and a boxed kit of a beverage-use hydrogen-containing water product, which has the openable container in the form of a straw-equipped packaging container or a spout-equipped packaging container which is a type of bag-like container, the boxed kit being characterized by having the straw-equipped packaging container or spout-equipped packaging container loaded therein such that the bottom of a container body of the straw-equipped packaging container or spout-equipped packaging container of the beverage-use hydrogen-containing water product faces upward, whereas a sealing cap for the straw-equipped packaging container or spout-equipped packaging container faces downward.本發明提供一種於自製造起即使經過一定期間之後亦可將氧化還原電位維持為較低之值，而且將溶存氫濃度維持為較高之值之飲料用含氫水製品。本發明係一種飲料用含氫水製品之裝箱套組，其特徵在於係具有能夠開封之容器、填充至該容器內而且密封之含氫水、及溶存於該含氫水中之氫濃度降低抑制劑之飲料用含氫水製品、以及作為上述能夠開封之容器為袋狀之容器之一形態之附吸管包裝容器或附流出口包裝容器的飲料用含氫水製品之裝箱套組，且以該飲料用含氫水製品之附吸管包裝容器或附流出口包裝容器之容器體之底部朝上，相反地附吸管包裝容器或附流出口包裝容器之密封蓋朝下之姿勢裝填至箱內。
