1. Folic Acid is an important part of prenatal nutrition. Including a recommended 600 mcg of Folic acid has been proven to reduce neural tube defects (spina bifida). Not all prenatals have absorbable forms of folic acid, so be careful. All it takes is a supplement which includes folic acid that is not compacted too tightly which can often happen in tablet form.

2. Acceptable amounts of Vitamin A. Taking too much Vitamin A during pregnancy (in the retinol form) has been shown to cause birth defects. Natural forms of Vitamin A, like beta-carotene, are needed during pregnancy and are acceptable if under 10,000 IUs per day.

3. Calcium is vital to a woman's health, especially during pregnancy. Not all of the daily recommended amount of calcium can be found in a prenatal vitamin, but it is important to have increased support during the second and third trimesters.

4. The right amount of iron in a non-irritating form. Many women feel sick as a result of the iron in their prenatal vitamin. Iron is important to prevent anemia and should be taken during pregnancy.

5. Increased Vitamin B6 during the first trimester is helpful in a prenatal because it can combat morning sickness.

6. The right amount of Vitamin C to help your body absorb iron and Vitamin C also boosts your immune system.

7. A healthy dose of Zinc during pregnancy can reduce the risk of low birth weight, increase infant immune systems, and help to build fetal body tissue.