Do Kids Need Vitamins?
Well, it depends on how they eat. If your kid is eating a balanced diet, they'll probably get all of the vitamins and minerals they need from the food they're eating. So there is no need to supplement with children's vitamins. If your kid is extremely picky (or doesn't drink any milk), they may need a vitamin D supplement.
Children's vitamins are mostly safe as long as you follow the directions on the label. Too much of some vitamins—such as iron, vitamin A, and vitamin D—can actually be toxic.
So vitamins for kids probably won't hurt, but they're not a substitute for a healthy diet, which includes fresh fruits and vegetables, whole grains, dairy products (or other calcium sources), and healthy fat, such as nuts.
Also, keep in mind that lots of foods, such as some cereals, bread and orange juice is fortified with supplemental vitamins and minerals such as vitamin D or calcium.