Apparently I was wrong. As reported in the New York Times (well really first in the New England medical journal):
Echinacea, the herbal supplement made from purple coneflower and used by millions of Americans to prevent or treat colds, neither prevented colds nor eased cold symptoms in a large and rigorous study.
Stupid hippies with their free love (which arguably is way better than paying for it) and herbal loving remedies. I'll never listen to you guys again. From now on all my medical advice will come from Emo-rockers, certainly they must know where it's at.