GINSENG CUTS FREQUENCY OF COMMON COLD: STUDY
It's not a cure for the common cold, but a Canadian company claims taking two pills throughout the winter can reduce the number and severity of colds.
Ref. https://www.cbc.ca/story/science/national/2...cold051024.html
I have never been an avid user of Ginseng, but one thing I have been told by experts is that it only works after long consistent usage and is thus not to be taken as a quick fix. So in the case of the above advice the usage would have to be long before winter sets in to be of any use.