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Guide

Prenatal Vitamins: What to Look For

A prenatal vitamin fills the gaps in a healthy diet with the nutrients that matter most in pregnancy, especially folic acid and iron. This guide explains what to look for, when to start, and what to do about common side effects. It is educational, not medical advice.

The key nutrients

Look for at least 400 to 800 micrograms of folic acid (it lowers the risk of neural tube defects), iron for your blood supply, iodine for the baby's brain, and DHA, an omega-3, for brain and eye development. Calcium, vitamin D, and B vitamins help too.

When to start and how to choose

Ideally start a prenatal with folic acid before pregnancy and keep taking it through breastfeeding. Any reputable prenatal that covers the key nutrients works; you do not need the most expensive one. Your clinician can recommend one that fits your needs, including vegetarian or higher-iron options.

Handling side effects

Iron can cause nausea or constipation. Taking your vitamin with food or at bedtime, splitting the dose, or trying a different form can help. Do not stop it on your own; ask your clinician about adjusting it.

This guide is educational and not medical advice. Talk with your clinician about the right prenatal vitamin for you.

Frequently asked questions

When should I start prenatal vitamins?
Ideally before you conceive, since folic acid matters most in the first weeks. If you are already pregnant, start now, and keep taking it through breastfeeding.
Are gummy prenatals okay?
Gummies are easier on the stomach but often lack iron, so you may need iron separately. Check the label for folic acid and iron, and ask your clinician.
What if my prenatal makes me nauseous?
Take it with food or before bed, split the dose, or try a different brand or form. Tell your clinician rather than stopping, because folic acid and iron matter.

Read next

Sources

  • American College of Obstetricians and Gynecologists (ACOG) on nutrition during pregnancy
  • Centers for Disease Control and Prevention (CDC) on folic acid