I am the sort that when I get a cold I am really down to it, fighting sinus infection, feeling gross, lasting 2 weeks!. I tried this product on two separate occasions when I got the first signs that I was getting a cold, and took it regularly for a few days, one time it totally disappeared, the other time I was aware I had a cold for a maximum of 2 days, but very mild. I have also given it to 3 other people who suffer badly with colds, and they have all experienced the same results, they can't believe it and neither can I! I have bought extra bottles to give away, what better gift could I give? Certainly something I will always have on hand.