The water enhancer.
It seems like last time I avoided Crystal Light because of aspertame. This stuff doesn't have aspertame - but sure it has some other fake sweetener. I haven't found too much info on it - have you?
I know this is weird, but I'm not a fan of plain water and with a little nausea it makes it hard to drink so I like to flavor it a bit. I'm guessing anything in moderation - but let's be realistic, I drink a lot of water now.