1.To prevent neural tube defects in the developing fetus and to prevent miscarriages
2.Adequate vitamin D is essential to keep up calcium levels and prevent osteoporosis
3.Regular iron use prevents anemia in those with moderate or severe menstrual periods
4.To supplement if you are on a low calorie diet, which vitamins may vary depending on which diet
5. B vitamins with those who carry genetic defects in the MTHFR line
5. More calcium for people who drink pop as the carbonation can affect our ability to extract calcium out of our foods
When making a decision regarding your need, hold on to those vitamins for now, and see your gyno for customizing your needs.