Well, the best calcium supplement for kids is one that is rich in Vitamin D, (of course) Calcium, magnesium, and zinc. These are all minerals that will help your body absorb calcium better. You’ll a... lso be stronger and healthier because these minerals all support healthy heart, brain, and body function. You may even be smarter if you take one calcium supplement with these minerals because these ingredients can help regenerate brain cells and can help generate new ones.Did you work on this visual? Claim credit!