Complete Prenatal Multivitamin

Prenatal vitamins supply nutrients that matter in pregnancy, most importantly folic acid, and often iron, iodine, vitamin D and others. They supplement — but do not replace — a healthy diet and prenatal care. Brands differ in what they contain, so check the label and ask your provider which nutrients you need.

People who are pregnant, trying to conceive, or breastfeeding, as advised by their provider. Whether it suits you depends on your health, medicines and test results — ask a clinician.

Follow the label or your provider's advice. Avoid taking extra vitamin A (retinol) supplements on top of a prenatal. Doses vary by product and person; this is not personal medical advice.

The CDC advises folic acid starting at least a month before pregnancy.

Nausea, constipation and stomach upset, often eased by taking the vitamin with food or at night.

Do not take additional vitamin A (retinol) supplements with a prenatal — too much vitamin A can cause birth defects. Keep iron-containing vitamins away from children.

Evidence level (our editorial summary, not a formal grading): Established (for folic acid).

Pregnancy & breastfeeding: Designed for use before and during pregnancy; ask your provider which product suits you.

Medication interactions: Iron and calcium in prenatals can reduce absorption of levothyroxine and some antibiotics; ask a pharmacist about spacing.

Talk to a healthcare professional before use if you are pregnant, breastfeeding, planning pregnancy, have a medical condition, take any medicine, or are scheduled for surgery. Dietary supplements are not approved by the FDA for safety or effectiveness before they are sold, and quality varies between products.

Reliable sources to check: NIH Office of Dietary Supplements fact sheets · NCCIH Herbs at a Glance · MedlinePlus Herbs & Supplements · FDA — Dietary Supplements