What I like about One Source Prenatal Vitamins is you can take one Caplet so it's like a regular multivitamin or two caplets for a higher prenatal dose. Or if you get sick while pregnant & can't handle the vitamins, you can take one at a certain time of day and take the other one later. Also it has the highest % Daily Value for the amount of vitamins and minerals per serving compared to the other prenatal vitamins in the store.