Many multivitamins kind integrated in one tablet which usually comes in the form of vitamin hair brain or eye. likewise, it is very dangerous because it can not calculate how much to eat anything. And who eat excessive or not. Various vitamins can prevent the absorption of each other. Such calcium will prevent the absorption of iron. Inhibit the absorption of iron, copper. The doping vitamin A You may have another type of vitamin deficiency. All of the above does not mean that vitamin A is bad or unnecessary. It should be eaten sparingly, or as much as doctors recommend who should receive vitamin supplements. Pregnant women to get folic and vitamin D increase the age of 65 years and children aged 6 months to 5 years and rarely sun. Should receive vitamin D Finally, children 6 months to 5 years, everyone should receive vitamin D supplements C and especially children who can not eat a variety.