Do I need to take vitamins and minerals supplements? Vita-Complete: There is no simple answer to this question. Vitamins are needed in small amounts. It is not necessary to take vitamin and mineral supplements by healthy individuals following healthy full diet and healthy living. In fact taking excess of vitamins and minerals can be dangerous and can increase the risk for kidney stones, liver and kidney damage.I get plenty of vitamins, why do I need minerals also? The vitamins you get from foods