Personally I prefer something like Emergen'C. I wasn't saying that it was bad, it has a very low bulk and weight if you want a water flavorant. But it does have to be added after purification agents do their thing, because if it has certain acids in it that neutralize both iodine and chlorine dioxide.

Many people aren't aware of that. There is no mention of it on any purification item I've ever seen, and you could knock me over with a light breeze if the CL package had that warning on it.