Q&A: What is the best vitamin to take to prevent sickness?

Question by thetravelingmartins: What is the best vitamin to take to prevent sickness?
Last semester I stayed sick everyday. I am either around students or I am being stressed by my classes (which makes my sickness even worse) What is the best vitiamin to prevent sickness?Should I take a multi-vitamin or a certain vitamin?

Best answer:

Answer by Michael M
Centrum

Add your own answer in the comments!