My DH is getting deployed at the beginning of next year, and will probably have to get some vaccines before he goes. I would like him to take some vitamin C every day to help bolster his immune system for whenever he gets the vaxes--he says he may not get any advance notice on when they will be given. How much is a good maintenance dose to help him? Also, is there anything else that he can do to help bolster his immune system to deal with the vaccines? He sort of tries to eat healthy (whole foods) although he drinks a ton of (mostly diet) pop.