Tom HubbertWhatever the USDA says is 100% daily. I think Zinc is
   45mg, Magnesium might be 200mg? and I have no idea what it is
   for B12. I also suck on Zinc when I think I'm getting a cold, or
   wipe a little on the tip of my nose and sniff up to coat my
   nostrils a little. Been doing that for years; cuts cold length
   down to about 3 days, although you get all of the symptoms just
   in a compressed time. After all, zinc is zinc, whether its in
   "Cold Eeze" or in a cheap zinc oxide pill :) "