Topic Overview

What is folic acid?

Folic acid is one of the B vitamins your body needs for good health. Getting enough of this vitamin prevents folic acid deficiency anemia. It also prevents certain birth defects.

The vitamin is also called folate, but there is a difference:

  • Folate is the natural form of this vitamin. It's found in food.
  • Folic acid is the man-made form. It's put into vitamin pills and fortified foods, such as fortified breakfast cereals.

Most people just say "folic acid" for either form of this vitamin.

What is the recommended daily amount of folic acid?

Most people can get the amount of folic acid they need by eating a well balanced diet.

Daily recommended folic acid: footnote 3
Category Age Daily amount of folic acid


0–6 months

65 mcg (micrograms)

7–12 months

80 mcg


1–3 years

150 mcg

4–8 years

200 mcg

9–13 years

300 mcg

Older children and adults

Over 13 years

400 mcg

Do some women need more folic acid?

Although the recommended amount of folic acid for all adults is 400 mcg a day, many doctors recommend higher amounts for women who are able to get pregnant. This is because folic acid plays a big role in preventing birth defects.

Women who don't get enough folic acid before and during pregnancy are more likely to have a child born with a birth defect, such as:

Here's an odd fact: The man-made form of this vitamin is actually absorbed better by our bodies than the natural form is. So even if a woman eats a well balanced diet, she may not get the extra folic acid she needs to prevent birth defects unless she also takes a supplement.

Experts say that all women who are able to get pregnant should take a daily supplement that has at least 400 mcg of folic acid while continuing to eat foods high in folate.footnote 2

Women who are planning to get pregnant should take a folic acid supplement every day for at least 2 to 3 months before trying to get pregnant.footnote 2 Continue taking folic acid during and after pregnancy. Talk to your doctor or midwife about what is right for you.

Some women need higher doses of folic acid. Women who have a higher risk for certain birth defects need higher doses of folic acid before, during, and after pregnancy.footnote 2 Talk with your doctor or midwife about the amount that is right for you.

Follow your doctor's advice about how to get higher amounts of folic acid. Don't just take more multivitamins. You could get too much of the other substances that are in the multivitamin.

What if you're not planning to get pregnant?

Even if you aren't planning to get pregnant, your doctor may recommend a daily supplement.

Many pregnancies aren't planned. And the birth defects that folic acid can prevent start to form in the first 6 weeks of pregnancy. This is often before a woman even knows she's pregnant.

So you can see why getting enough daily folic acid—even before you get pregnant—is so important. If you are pregnant and you have not been taking a vitamin containing folic acid, begin taking it right away.

What foods contain folic acid?

Foods high in folate include cooked dried beans, peas, lentils and edamame (green soybeans), citrus fruits, dark greens like spinach, and fortified breakfast cereals and breads.

Estimates of folic acid in certain foods 
Food Serving size Folic acid amount

Spinach, boiled, drained

125 mL (0.5 cup)

139 mcg

Split peas, boiled

175 mL (0.75 cup)

94 mcg

Asparagus, boiled, drained

6 spears

134 mcg

Frozen broccoli, boiled, drained

125 mL (0.5 cup)

54 mcg


125 mL (0.5 cup)

21 mcg


1 medium 

39 mcg

Canned dark red kidney beans, not drained

175 mL (0.75 cup)

44 mcg

Canned pinto beans, not drained

175 mL (0.75 cup)

43 mcg

Lentils, boiled

175 mL (0.75 cup)

265 mcg

Macaroni, enriched, cooked

125 mL (1/2 cup)

69 mcg

Folic acid tips

    • Breads, breakfast cereals, and pasta are often fortified with folic acid. Look for folic acid in the ingredients list.
    • Eat vegetables raw or lightly steamed.
    • Multivitamins often contain folic acid.



  1. Health Canada (2008). Nutrient value of some common foods. Ottawa: Health Canada. Also available online:
  2. Wilson RD, et al. (2015). Pre-conception folic acid and multivitamin supplementation for the primary and secondary prevention of neural tube defects and other folic acid-sensitive congenital anomalies. SOGC Clinical Practice Guideline No. 324. Journal of Obstetrics and Gynaecology Canada 37(6): 534–549. Accessed July 20, 2015.
  3. Food and Nutrition Board, Institute of Medicine (2012). Dietary reference intakes (DRIs): Recommended dietary allowances and adequate intakes, vitamins. In LK Mahan et al., eds., Krause's Food and the Nutrition Care Process, 13th ed. St Louis: Saunders.

Other Works Consulted

  • Dietitians of Canada (2011). Food sources of folate. In PEN: The Global Resource for Nutrition Practice. Toronto: Dietitians of Canada. Available online:
  • Finer LB, Henshaw SK (2006). Disparities in rates of unintended pregnancy in the United States, 1994 and 2001. Perspectives on Sexual and Reproductive Health, 38(2): 90–96.


Adaptation Date: 7/8/2016

Adapted By: HealthLink BC

Adaptation Reviewed By: HealthLink BC

Adaptation Date: 7/8/2016

Adapted By: HealthLink BC

Adaptation Reviewed By: HealthLink BC