In a viral video, a microbiolgist warns that Vitamin C supplements like Emergen-C and Airborne don't prevent colds.

Medically reviewed by Kashif J. Piracha, MD Medically reviewed by Kashif J. Piracha, MD Does Emercen-C work to prevent or ...

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 ...