both supplements feature high-dose vitamin C, each containing 1000 milligrams per serving. However, Emergen-C has almost ...

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.

The airplane cabin is dry and microorganisms are free to circulate, so before you even step on the plane, take a couple of vitamin C tablets to give your body the ability to fight off airborne germs.