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Is Calcium supplements safe in pregnancy?
Generally safe
Yes — if you are not getting enough from food.
What the evidence says
Calcium supplements are safe in pregnancy. However, most women getting a few portions of dairy, leafy greens, or fortified plant milks daily will meet their needs from food. Do not take mega-doses. If you follow a vegan diet or avoid dairy, a supplement is often appropriate — ideally discussed with a dietitian or GP.
Why this matters
Calcium is essential for the baby’s bone development. Moderate supplementation is safe; mega-doses can interfere with magnesium and iron absorption.
Source:NHS guidance on calcium in pregnancy
Last reviewed:April 2026
Please note — This is general guidance based on NHS advice as of April 2026. It is not medical advice. For advice on your specific pregnancy, please speak to your midwife or GP.
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