Do not buy the synthethic vitamin pills. Only buy organic natural ones. Or better, just eat and drink a lot of vitamines with fruit and vegatables. For exampl make shake of it. Taking vitamin pills should not be a subsitute for a helthy diet. By the way not only vitamins are important, also minerals. Your boy andyours organs need it. Our modern western diet is mostly rubbisch for tebody (like cola, fries and hamburgers, there is nothing useful for the body, only calories). It is just empty food for the body. And people want to compensate with swallowing vitamin pills.