I DEFINITELY CATCH LESS COLDS WHEN I TAKE THIS EVERYDAY...
I take one a day at 2 pm to chase away the after lunch sleepies.  Also I catch less colds, even when my coworkers and family are all sick and sneezing their germ faces off (contains zinc and vitamin c).  Anecdotal?... sure.  But I don't care - it works for me so I'm sticking with it.
Rating: 5 stars