I asked Moses' doctor and he said it is no need to give any supplement to him , and for the ages of the children, because they can absorb enough nutriation from the foods, like fish..
I trust natural foods are more reliable.
yes, they are different. few months ago, a mom overgave the 肝油丸 to her daugther, which finally her 10 year-old daugther has serious liver problem.
Especially for the ages of our children, because their liver and organs are not yet well developed and mature, be careful to feed the 肝油丸 to them.