PROBLEM TO BE SOLVED: To provide a method of producing tablets such as bath agent tablets with high bathing effect, and to provide the tablets.SOLUTION: In a tablet type bath agent prepared by adding an organic acid in an amount of 1/20-1/3 of a granule A to the granule A of sodium bicarbonate as a foaming agent with polyethylene glycol, mixing them, and compression molding them: a tablet is produced by compression molding achieving hardness of ≥15 kg for both diameter direction hardness and Vickers hardness, so that a neutralization reaction occurs efficiently inside the tablet, and bubbles of carbon dioxide with a micro size bubble diameter are generated inside the tablet and the carbon dioxide is produced continuously into water (bath water) for a fixed period. In this way, the bath agent efficiently dissolving carbon dioxide in water while reducing quantity of a gas released to the air can be provided.COPYRIGHT: (C)2014,JPO&INPIT【課題】入浴効果の高い、入浴剤等の錠剤の製造方法及び錠剤の提供。【解決手段】発泡剤である炭酸水素ナトリウムのポリエチレングリコールとの造粒物Aに対し、1/20から1/3の量の有機酸を加えて混合し圧縮成型する錠剤式の入浴剤において、直径方向からの硬度もビッカース硬さも15kg以上となるような圧縮成型により錠剤とすることで、錠剤内部で効率よく中和反応が起き、錠剤内部で発生する炭酸ガスの泡径がミクロサイズの泡となり、炭酸ガスが水中[浴中]に継続的に一定時間発生することで、空気中へ逃げるガスの量が少なく効率的に炭酸ガスが水に溶解する入浴剤。【選択図】なし