I use this stuff religiosly since it came out, and I have yet to develope a full blown cold.
I did some research on it and read reports on how it really is clinically proven through independant labs to shorten the rhinovirus (the cold).
They don't know exactly how, zinc gluconate acually boost white blood cells, which is what zicam is.
What ya'll experience.
I used to lose a week in the gym, now its just a couple days, I don't hardly lose anything.