There are many brands and forms of prenatal multivitamin available and not all brands are listed on this leaflet. Prenatal multivitamins are a combination of many different vitamins that are normally found in foods and other natural sources. Prenatal multivitamins are used to provide the additional vitamins needed during pregnancy. Minerals may also be contained in prenatal multivitamins. Prenatal multivitamins may also be used for purposes not listed in this medication guide.