calcarea phos. 12x is available.This medicine is biochemic and can be taken by kids having teething problem , bones problem or by adults to overcome deficiency of calcium.you can take direct calcium from market but according to facts they can cause stone problem if do not get washed out properly from body.Homeopathy claims not of having such problems via biochemic medicines.So you can purchase calcarea phos for your kids as well for yourself or your dear ones if you believe in homeopathy