A friend offered me some when I had a cold. It's an extract of a root and some herbs. It seemed to help with the congestion and MIGHT have cleared my cold up quicker. As I only tried it for the one cold, and only used it a handful of times then I can't be sure it sped up recovery.
Jary, Eclectic Institute Osha is an herbal product that you use at the first sign of a cold. It is supposed to decrease the intensity and shorten the length you are ill. I tried it several times with mixed results.