If you are pregnant or trying to conceive, you have probably heard that folate (vitamin B9) is essential for a healthy pregnancy. Most prenatal vitamins contain it, and doctors often emphasize how important it is during the early stages of fetal development.
But many women don’t realize something important:
Not all forms of folate are the same.
Prenatal vitamins typically contain either folic acid or folate, and the difference between them matters—especially when it comes to how your body processes this critical nutrient.
Understanding the difference can help you choose a prenatal vitamin that better supports both your health and your baby’s development.
What Is Folate and Why Is It Important During Pregnancy?
Folate plays a crucial role in:
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DNA production
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Cell growth
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Red blood cell formation
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Early fetal development
During the first weeks of pregnancy, folate helps form the neural tube, which eventually develops into the baby’s brain and spinal cord.
Getting enough folate significantly reduces the risk of neural tube defects, including spina bifida.
Because neural tube development occurs very early in pregnancy, health organizations like the Centers for Disease Control and Prevention (CDC) recommend that women of reproductive age consume at least 400 mcg of folate daily.
What Is the Difference Between Folate and Folic Acid?
The key difference is their source and how the body processes them.
Folate is the naturally occurring form of vitamin B9 found in foods.
Folic acid is a synthetic form created for food fortification and cheaper manufacturing costs.
While both provide vitamin B9, they are processed differently in the body.
Folate from food is converted in the small intestine into the active form the body uses, called 5-methyltetrahydrofolate (5-MTHF).
Folic acid must go through additional steps in the liver before it becomes usable, and this conversion can be slower for many individuals, meaning they are not absorbing the necessary amounts to support a healthy pregnancy.
Where Does Natural Folate Come From?
Folate is naturally present in many nutrient-dense foods, especially:
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Dark leafy greens like spinach and kale
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Citrus fruits
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Beans and lentils
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Peas
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Nuts
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Beef liver
However, folate is sensitive to heat and light, which means some of it can be lost during cooking or food processing.
This is one reason many women rely on prenatal vitamins to help meet their daily folate needs.
Where Is Folic Acid Typically Found?
Folic acid is commonly used in fortified foods and supplements because it is less expensive and more stable during processing and storage.
It is typically found in:
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Fortified cereals
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Bread
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Pasta
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Rice
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Standard multivitamins
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Many traditional prenatal vitamins
Food fortification with folic acid was introduced to help reduce neural tube defects in the population, and while it has been effective in improving vitamin B9 intake overall, we have also seen an increase in childhood allergies and asthma. There is some strong evidence suggesting a link between synthetic folic acid and these conditions.
Why Do Some Prenatal Vitamins Use Folate Instead of Folic Acid?
Some modern prenatal vitamins use active forms of folate, such as methylfolate (5-MTHF) or folinic acid, because these forms are already closer to the form the body uses.
This means they do not require the same metabolic conversion steps as folic acid.
For many women, this may allow the body to utilize folate more efficiently.
What Is the MTHFR Gene and Why Does It Matter?
The MTHFR gene produces an enzyme that helps convert folic acid into its active form.
Research suggests that 30–50% of people carry a genetic variation in this gene that can make that conversion less efficient.
Most people with this variation can still process folic acid, but some experts suggest they may benefit from prenatal vitamins that contain active folate forms instead.
Because many women do not know whether they carry this genetic variant, some healthcare providers prefer prenatal vitamins that include bioactive forms of folate.
Can Too Much Folic Acid Be a Problem?
When large amounts of folic acid are consumed, some of it may remain in the bloodstream in a form known as unmetabolized folic acid.
Researchers are still studying the long-term effects of this, but high folic acid intake may also mask symptoms of vitamin B12 deficiency, which can delay diagnosis.
Natural folate and active folate forms do not appear to create the same concern.
How to Choose a Prenatal Vitamin With the Right Form of Vitamin B9
When evaluating prenatal vitamins, consider looking for products that contain bioactive forms of folate, such as:
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L-5-methyltetrahydrofolate (5-MTHF)
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Methylfolate
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Folinic acid
These forms are closer to the form your body naturally uses and may be easier for the body to process.
A high-quality prenatal vitamin should also include other key nutrients such as:
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Iron
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Iodine
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DHA
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Vitamin B12
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Vitamin B6
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Zinc
Together, these nutrients support healthy pregnancy, fetal brain development, and maternal health.
The Bottom Line
Folate is one of the most important nutrients for women who are pregnant or trying to conceive.
While both folic acid and folate provide vitamin B9, they differ in how they are sourced and how the body processes them.
Natural and bioactive forms of folate may offer advantages for some women because they are closer to the form the body actually uses and offer a better safety profile overall.
For this reason, we have chosen to include active folate forms rather than synthetic folic acid in our prenatal vitamins:
-Bump DHA (best for higher support pregnancies)
-Bump Mini (best for everyday prenatal support)
Choosing a prenatal vitamin that contains high-quality folate along with other essential pregnancy nutrients can help support both maternal health and your baby’s development during this critical time.
