I’ve used transfer factor for over a decade and really have beat just about every cold and flu that’s been going around for all that time. I live in a small community, and see when sickness starts. At the first sign of a challenge, I immediately double or triple my dose. My immune system must go into overdrive at that point, as the “I’m starting to get a bug” feeling never gets fully manifest. Life goes happily on without bothersome sickness and lost productivity. I’ll never be without it after seeing what it’s done for so many of my patients and in my own body.