Calcium is found primarily in milk products, broccoli and canned salmon. Iron is necessary for strong blood. Iron requirements double during pregnancy, and equal 15-30mg per day. Foods rich in iron include liver, red meat and dried fruit. It is recommended that women take a vitamin supplement containing 30 mg of iron during the second and third trimesters.
Folic acid is found mainly in orange juice, green leafy vegetables, and beans .
A supplement is usually added during pregnancy. It is recommended that all women considering getting pregnant take 400 micrograms of folic acid daily. Nutritious foods should be the first place you look in meeting your vitamin and mineral requirements during pregnancy. Taking a vitamin supplement is a good way to fill in the nutritional gaps when you are not getting adequate daily nutrition. However, some select women do require prenatal vitamins, these include women having multiple births, heavy smokers, alcohol and drug users.