Folic Acid

Nutrition & Diet

Folic acid (vitamin B9 / folate) is a B vitamin needed to build DNA and make healthy new cells. For women who may become pregnant, it is the single most important supplement — it prevents serious birth defects of the baby's brain and spine.

Also known as: Folacin, Folate, Pteroylglutamic acid, Vitamin B9

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About Folic Acid

About this summary: Written by Swasthya Plus for Indian readers, using MedlinePlus, National Library of Medicine as a reference source. For personal guidance, please consult a qualified Health Expert.

Folic acid (vitamin B9 / folate) is a B vitamin needed to build DNA and make healthy new cells. For women who may become pregnant, it is the single most important supplement — it prevents serious birth defects of the baby's brain and spine.

Why it's non-negotiable in pregnancy

  • Adequate folate in the first 28 days after conception — often before a woman knows she is pregnant — prevents neural tube defects (spina bifida, anencephaly).
  • Start 400 micrograms (µg) daily at least one month before trying to conceive and continue through the first trimester.
  • Women on anti-seizure drugs, with diabetes, obesity, or a previous baby with a neural-tube defect need a higher dose (10× the usual) — ask a doctor.
  • Iron-folic acid (IFA) tablets are distributed free to pregnant women, adolescents, and young children through Indian government health services.

Food sources

  • Leafy greens — palak, methi, amaranth, mustard greens, coriander.
  • Pulses — rajma, chana, moong, masoor.
  • Other: eggs, liver, citrus fruits, beetroot, bananas, peanuts, fortified atta and fortified rice under India's fortification programme.

Folate deficiency beyond pregnancy

  • Causes megaloblastic anaemia — fatigue, breathlessness, pale tongue, mouth ulcers.
  • Common with: poor diet, alcohol dependence, coeliac disease, pregnancy, some medicines (cancer/autoimmune drugs, anti-seizure medicines, some antibiotics).
  • Confirmed on a blood test (serum folate / vitamin B12).
  • Treatment is usually oral folic acid — but B12 deficiency must be ruled out first; giving folic acid alone when B12 is low can worsen nerve damage.

Reference source: MedlinePlus, National Library of Medicine