You need to only give them if your dr says whether they are needed or not. A combination arising from a daily diet of cereals, pulses, vegetables,green leafy vegetables, fruits, milk is more than sufficient to get them. A wholesome diet provides all types of vitamin and nutrition in this age. Additionally you get vitamin D from sunlight. Nonveg food if taken intermittently will provide vitamins which lack in veg diet. If a child is taking above diet no need of additional supplement. If not then meet a dr who will guide you as which vit/minerals need to be given in oral form The more the natural form of supplement the better.