Which Vitamins Do I Need During Pregnancy?
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Medically reviewed by
Baby Circle Medical Board
Reviewed on 18 July 2026
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Folic acid, iron, calcium, vitamin D and moreEvidence-based & doctor-reviewed
The key ones are folic acid (400 mcg daily, ideally before conception and through the first 12 weeks), iron, calcium, vitamin D, and often iodine and omega-3. Many take a prenatal multivitamin. Avoid high-dose vitamin A, and always follow your doctor's advice.
The essentials
- Folic acid — 400 mcg daily; prevents neural-tube defects.
- Iron — prevents anaemia.
- Calcium & vitamin D — for bones.
- Iodine — for brain development.
- Omega-3 (DHA) — for brain and eyes.
Prenatal multivitamins
A pregnancy-specific multivitamin is a convenient way to cover these. Choose one designed for pregnancy rather than a general supplement.
What to avoid
Avoid high-dose vitamin A (retinol) and megadose supplements, which can harm your baby. Do not take extra supplements without medical advice.
Frequently asked questions
Which supplement is most important?
Folic acid, ideally started before conception and taken through the first 12 weeks.
Do I need a prenatal multivitamin?
Many benefit from one, but your doctor may tailor supplements to your needs.
Which vitamins should I avoid?
High-dose vitamin A (retinol) and unprescribed megadose supplements.
Eat well through every week 💜
See trimester-by-trimester nutrition in the complete 40-week guide.
40-Week GuideJoin The CircleReferences
Related reading
Top 25 Iron-Rich Foods for PregnancyCalcium Requirements During PregnancyWhat Should I Eat During Pregnancy?📖 40-Week Pregnancy Guide
Medical disclaimer: This article is for general education only and is not a substitute for professional medical advice. Always consult your doctor or dietitian about your pregnancy diet, especially if you have any condition such as gestational diabetes or allergies. Reviewed by the Baby Circle Medical Board.