In most caffeine / tea products in local shops / conbinis there is an indication of how much caffeine is in a particular coffee / tea product. Yesterday I drank a this
https://www.topvalu.net/items/detail/4549741769969/
Basically a litre of 100 yen ice coffee throughout the day. I want to drink it on the regular but I wanted to make sure there is some indication of the amount of caffeine in mg I am taking in. To my surprise on the box, no matter how hard I looked I could not find any indication of the caffeine amount which is extremely odd / concerning.
Does anyone know how to identify or estimate how much caffeine this product has per litre?
by JollyFoot3243