zicam for kiddos?

hiskitten

I have a 1.5 year old & an almost 5 year old.  I'm starting to feel a little "iffy" and hope its just the cedar already starting, but everyone at work is either sick with the flu or upper respiratory infections.  Booo!  I don't want to be sick on Xmas so I'm starting zicam & vitamin C, but can they take the childrens zicam?  Any suggestions on what I should do to help boost their immune systems right now?!  I know getting sick this time of year is inevitable, but I just want to make it through this weekend!