Folic Acid

Folic acid is a type of B vitamin (B9) that plays an essential role in cell growth, red blood cell production, and brain function. It is particularly important during pregnancy to help prevent birth defects. If you've been advised to take folic acid, here’s what you need to know.

What is folic acid?

Folic acid is the synthetic form of folate, a B vitamin found naturally in foods like leafy greens, beans, and citrus fruits. It’s commonly used in supplements and fortified foods to help prevent folate deficiency.

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How does folic acid work?

Folic acid helps the body produce DNA and red blood cells, which are essential for overall health, especially during rapid growth periods like pregnancy and infancy.

What is folic acid used to treat?

Folic acid is used for:

  • Preventing neural tube defects (like spina bifida) during pregnancy
  • Treating folate deficiency anaemia
  • Supporting red blood cell production
  • Lowering homocysteine levels, which may help reduce the risk of heart disease and stroke

Who can take folic acid?

Most adults and children can take folic acid, particularly those who may not be getting enough folate from their diet.

Who might not be able to take folic acid?

Folic acid may not be suitable if you:

  • Have an untreated vitamin B12 deficiency
  • Have certain types of anaemia (like pernicious anaemia) without medical advice
  • Are allergic to folic acid supplements

Can I take folic acid if I’m pregnant or breastfeeding?

Yes, folic acid is essential during pregnancy. It is recommended that all women trying to conceive take 400 micrograms daily until at least the 12th week of pregnancy to reduce the risk of birth defects.

What if I miss a dose?

If you forget a dose, take it as soon as you remember. If it’s nearly time for your next dose, skip the missed one—don’t take two doses at once.

How effective is folic acid?

Folic acid is highly effective at preventing birth defects and treating folate deficiency when taken as recommended.

What should I do if I take too much?

Folic acid is generally safe, but excessive intake can mask a vitamin B12 deficiency, which may lead to nerve damage. Stick to the recommended dose unless advised otherwise by a doctor.

What dose of folic acid is usually taken?

The usual doses are:

  • Pregnancy: 400 micrograms daily
  • High-risk pregnancy (e.g., history of neural tube defects): 5mg daily
  • Folate deficiency anaemia: 5mg to 15mg daily

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What are the side effects of folic acid?

Folic acid is usually well tolerated, but possible side effects include:

  • Nausea
  • Bloating
  • Loss of appetite

How should I take folic acid?

Folic acid is taken as a tablet or liquid, usually once daily.

When should folic acid be taken?

Folic acid can be taken at any time of the day, with or without food.

What are the brand names for folic acid?

Folic acid is usually prescribed as a generic medicine, but it may be included in multivitamin supplements.

Final thoughts

Folic acid is an important supplement for pregnancy and overall health. It helps prevent birth defects and supports red blood cell production. Speak to a doctor if you have any concerns about your folic acid intake.

Always consult a medical professional
This article is for informational purposes only and is not a substitute for medical advice. Always consult a healthcare professional before starting, stopping or changing any medication. If you have concerns about your medication or experience side effects, speak to your doctor or pharmacist immediately.

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