Vitamins and Minerals in most cases are provided through food and the elements such as the sun, so do we really require additional vitamins and minerals, if you have a good diet intake that suits your body and you are not showing any signs of lacking something, then no.
It all comes down to what you as an individual require, it’s just that simple. There was a show on TV this weekend which looked at this and its a billion dollar industry which is not regulated in a number of countries, so what you buy could have everything of the bad things and nothing of the good things or any other combination. In spite of that, you have to work out through your dietary and from a reliable health practitioner what you are lacking if anything and not follow advertisement or word of mouth
It is also said that most of the vitamins and minerals are synthetic, made in a lab, so they would be lacking something that is natural that they have not discovered yet. Start at the beginning, good gut health, good diet, m movement, good sleep and see what happens