One A Day is a well-known brand of vitamins, but its name is just that. A name. A brand. Not dosage instructions. This caught Jeff by surprise, though, when he bought a bottle of the brand’s Vita-Crave gummy vitamins for adults. He opened the bottle to find it half full: pretty normal for bottles of pills and supplements, but still irksome. Then he noticed the instructions on the bottle: take two per day. Take two One A Day gummies. I see.