They are just things you add to iced tea and other drinks to accent the flavor when you do not have an actual lemon (or lime or orange) handy.posted by Nattie at 12:09 PM on July 2, 2008 Emergen C is pretty good (provided all the vitamin B does not conflict with anything else you might be taking)posted by Burhanistan at 12:13 PM on July 2, 2008 We use Tazo Tea's Passion flavor to make AMAZING iced te