To answer both marka and luck luciano. In my honest opinion, multivitamin supplementation isn't all that necessary, a good diet will get you all the nutrition you require, as you can see it doesn't take all that much (ex: B-9 400-1000 mcg)to get the required dose in order to stay healthy . There are those exceptions for those vitamins that superdosing does add additional benefits (C, D, B12, calcium, etc).