 Do they work? Are they efficacious? What about supplements? Across our nation, every day, there are millions of people, about a third is the number I saw, about a third of the adult population, they pop a multivitamin pill. You might be one of those, right? Normally, they take it at their breakfast. The idea, of course, is you take your multivitamin and it's supposed to help whatever deficiency you might have, right? Or give her the energy you need, your B12 or whatever.