The present invention relates to an oral rehydration solution composition comprising a strain of Bacillus subtilis or a bacterium obtained by culturing a strain of Bacillus subtilis, it being possible for said composition to be in the form of a tablet.本發明關於一種口服再水合溶液組成物,其包含枯草芽孢桿菌(Bacillus subtilis)菌株或經由培養枯草芽孢桿菌菌株所取得之菌,該組成物可為片劑形式。