Cathy, like you I have been taking Vitamin C (500 mg/day) for about a year and I am usually the last one to catch a cold in my family when the weather changes (knock on the wood).Even if I have a cold, I can recover pretty soon as compared with others. Again I am not sure if it is the Vitamin C that helps me or that my immune system has been strengthed through healthy diet and exercises.I don't take other types of Vitamin and I don't eat too much fruit because it doesn't taste good to me. But I have a tomato as my breakfast every morning.

Karen.