Prenatal vitamins contain a wide range of vitamins, minerals, and other nutrients that are meant to support people who are trying to conceive and through the postpartum period. Taking a prenatal vitamin as much as three months before getting pregnant could help improve egg quality, as well as ensure you are starting pregnancy with a solid foundation. Plus, making sure you are not lacking in any nutrients is helpful if first-trimester nausea rears its head and getting adequate nutrient intake is difficult. A prenatal or postpartum supplement after birth is also beneficial since a birthing parent's body is depleted, and some nutrients are lost through nursing, making needs as high, if not higher, in some cases.