Folic acid

Also called: folate, vitamin b9

A B vitamin (folate) needed to make new cells and DNA.

Why people take it: Planning a pregnancy and early pregnancy, and anaemia.
What the evidence says: Strong evidence: taking 400 mcg a day from before conception through early pregnancy greatly lowers the risk of serious birth defects of the brain and spine (neural tube defects).
Be careful: Generally safe at usual doses. More than 1,000 mcg a day can hide a vitamin B12 deficiency. Some women need a higher dose on a doctor's advice.
In food: Leafy greens, beans and dals, citrus fruits, fortified foods.

Other most popular

Ginseng (Asian / Korean)Astragalus (huangqi)Reishi (lingzhi)Cordyceps (dongchong xiacao)Goji berries (gouqi)Red yeast rice (hongqu)Glucosamine (and chondroitin)Bird's nest (yanwo)

Common questions

What is Folic acid?

A B vitamin (folate) needed to make new cells and DNA.

Why do people take Folic acid?

Planning a pregnancy and early pregnancy, and anaemia.

Does Folic acid work?

Strong evidence: taking 400 mcg a day from before conception through early pregnancy greatly lowers the risk of serious birth defects of the brain and spine (neural tube defects).

Is Folic acid safe?

Generally safe at usual doses. More than 1,000 mcg a day can hide a vitamin B12 deficiency. Some women need a higher dose on a doctor's advice.

Sources and further reading

NIH Office of Dietary Supplements: folate

Last reviewed 31 October 2026. Written by Satya Babu.

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