I just got a new kind of prenatal vitamin and now I am worried that something in them might not be good for breastfeeding. They are called "Prenatal Essentials" and are Whole Foods brand. On the label it says, "If you are pregnant or lactating, consult your health care professional ..." I think that's funny seeing as how they are prenatal vitamins. Maybe they just have to say that ... Anyway, any advice? Thanks!