5 Must-Take Supplements: A Doctor Explains by B.J. Hardick. You’ve probably got a bathroom cabinet or kitchen cupboard full of them. If you’re like most people, studies prove you love, love, love supplements. In 2015 alone, Americans spent over $20 billion on vitamins, minerals, antioxidants, and other nutrients in a bottle.Don’t shoot the messenger, but you’re probably spending hard-earned money on empty claims, unsubstantiated promises, inferior quality products...