Part of Elinor’s skepticism about such products comes from the fact that they have a substantial amount of sugar. For example, according to the nutrition facts for Emergen-C, one 9.1-gram packet has 6 ...

While a packet of Emergen-C or a tablet of Airborne won't hurt you, doctors say you'll probably pee out more of the vitamin than you can use, and that your money might be better spent elsewhere.