What supplements should pregnant vegans take?
Besvaret 27. oktober 2026
B12, on top of what every pregnant woman is advised to take. The Danish food authority advises all pregnant women to take folic acid (400 µg a day from trying to conceive until week 12), vitamin D (10 µg a day throughout pregnancy) and iron (40-50 mg a day from week 10), plus 500 mg of calcium a day without dairy. For vegans it also advises 4 µg of B12 a day.
A systematic review of six studies of pregnant vegans found that B12 supplements seem to give mother and baby enough B12. Babies of vegan mothers had lower birth weight, but the studies are too few and too small for firm conclusions. The German Nutrition Society (DGE) advises pregnant and breastfeeding vegans to take 200 mg a day of the fatty acid DHA, since they don't eat oily fish. One author of the advice leads a research project funded by the Alpro Foundation.
My sources have no Danish iodine advice specifically for pregnant vegans. Talk to your doctor or midwife about doses and blood tests.
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