I have no idea if it is a good electrolyte replacement (especially, as Jeff McCann points out, only water is really necessary for people on a normal diet), but I drink it because it's quite pleasant. Especially ice cold on a hot day.

It is sweet, but not cloyingly so, and very slightly salty. It is slightly cloudy, and non-carbonated.

When I was on vacation in Tokyo in August (!) one year I found that I had to drink plenty of fluid quite regularly. The vending machines have a great choice, and a can or bottle of something is usually less than $2.

If I'm spending money I'd like more than just plain water thank you. I find it quite galling that a bottle of water costs the same as a bottle of something that has a bunch of stuff added.

Actually, drinking fountains can be found easily in Tokyo, so once you've bought your first bottle you can refill it for free.

I guess my recommendation is don't be put off by the name. Try some and then decide if you want to try it again. You can often find it in Asian supermarkets and convenience stores (we have it in New Zealand, even).

A