You say *which* is NOT a characteristic of vitamins
But you don’t give any options. So I guess I’ll try and answer without them….
Since I don’t know exactly what you mean, I can only help you so much… :/
Vitamins are not drugs or miracle cures.
Taking large doses of vitamins can be harmful because your body only needs vitamins in very tiny amounts.
Eating plenty of fruits, vegetables, wholegrains and cereals will give your body the vitamins it needs, at the right level and in the right balance.
Vitamin supplements can’t replace a healthy diet, but a general multivitamin may help if your diet is inadequate.
People who may need vitamin supplements include pregnant and breastfeeding women, people who consume alcohol in amounts over the recommended level, drug users and the elderly.