I think you may find some supplements for kids, we have them available in pharmacy and in supermarkets here. Brands like Cenovis and Blackmores have children's supplements. We also found some omega 3 added to yogurt here, it is not an animal source but rather from seaweed or something similar, a sea plant that fish like salmon eat, which is how they get omega 3 in the first place!
I use a supplement for DD on occasion with iodine added as well as it's often deficient, at least here in Australia. It used to be a 'positive contaminant' in cows milk products as it was used in cleaning dairy teats etc. It also appeared that salts were not available as 'iodised' although I wonder if that's improving as I've seen more instores than last year. There was talk in medical literature of in increase in kids with iodine deficiencies and health problems.
I use it as I want to be sure she has enough, she eats well but fish is not always on our menu, although we also use canola oil and occasionally iodised salt on our eggs and potatoes. I think I need to get some flax seed oil too, sounds good!
