Do you need vitamin D during pregnancy?
In the UK, every pregnant woman is advised to take vitamin D from October to March — and some all year.
Medically reviewed by Dr. Christopher Sterling, obstetrician ·
The short answer
Yes. The NHS recommends 10 micrograms (400 IU) of vitamin D a day from early October to late March, and all year if you cover most of your skin, spend a lot of time indoors or have darker skin. It helps build your baby’s bones and teeth.
Why it matters
Vitamin D regulates calcium and phosphate, which the baby needs to build bones and teeth.
In northern countries, autumn and winter sunlight isn’t strong enough for your skin to make vitamin D. If you usually cover your skin outdoors or spend a lot of time indoors, the NHS advises taking it all year — and to consider it if you have black or brown skin.
More isn’t better: don’t take more than 100 micrograms a day.
What to do
- Take 10 mcg (400 IU) vitamin D daily, at least October to March — many pregnancy multivitamins include it.
- Don’t double up: check the total across all supplements you take.
Common questions
How much vitamin D should I take while pregnant?
The NHS recommends 10 micrograms (400 IU) a day. Your doctor may advise more if your levels are low.
Sources
Medically reviewed by Dr. Christopher Sterling, obstetrician, on against the sources above. Guidance can differ between countries — always follow the advice of your own midwife, doctor or pharmacist. Medical disclaimer.
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