Pocari is well known and available everywhere in Japan (that makes it pretty good choice when dealing with hangover) but OS-1 is better https://www.os-1.jp/en/

Pocari is well known and available everywhere in Japan (that makes it pretty good choice when dealing with hangover) but OS-1 is better https://www.os-1.jp/en/ https://www.os-1.jp/en/