For me, Pocari Sweat is the king of Japanese sports drinks. It has been a few years since I visited Japan, and I still have a unopened bottle of Pocari Sweat "on standby" :)

I enjoy Pocari Sweat, but I do worry about all the pocaris that may be harmed in the process of sweating them out to manufacture the drink.

Pocari Sweat tastes like dispersible aspirin. I still don't know if I like it or not.

I think those are too mainstream for this article. From the looks of this, the products mentioned would be niche even to a Japanese audience.

Don't forget CowPiss, I mean Calpis!