I definitely think the more modern approach is no, if they are eating a healty diet. Don't forget, we are under incredible pressure and exposed to so much marketing to make us think that we "need" things for our kids. On the other hand, I have also heard that it can't hurt, but you can overdose your kids on stuff, so don't do more then the one dose a day. My aunt is of the opinion, and I have seen this reflected in some science journals, that because of the changes we have made in the mass production of our food, that it isn't as nutritious as even a few decades ago, mineral content depleted in soil, etc., so you could take that into consideration. I would look into getting one that has no additives, preservatives, or sugars, though -- why put bad things in when you are trying to only increase the good?