I swear by Zinc for getting rid of colds. Zinc actually supports the immune system, and can prevent you from getting sick, or shorten your misery time. While it's always better to try to get vitamins and minerals naturally, through food, you can find zinc supplements at your health food store. Also, zinc is the active ingredient in cold remedies like Zicam and Cold-Eze. Be warned, though, zinc can be a little tough on an empty stomach.

Good luck staying cold-free!