Folate vs Folic Acid Foods and Supplements

Folate vs Folic Acid Foods and Supplements


Folate gets thrown in with folic acid, but they aren't equals. 

One is natural. One is unnatural.

One is found naturally in food and some high-quality supplements. The other is found naturally in NO foods, but is in lots of supplements (especially cheap supplements and "fortified" foods). 


What's in This Post

 Folate vs Folic Acid
 Folate and Folic Acid Foods
 What to Look for in Folate Supplements
 Folate v Folic Acid Recommended Dose
 When to Take B Vitamins

Notes: The contents of this post are not intended to be medical advice. It is recommended that you seek the advice of personal medical professionals. I may receive small compensation for sales from links in this post, but there is no increased cost to you. 


Feed Your Calm: Anti-Anxiety Anti-Stress Diet and Supplement Tips for Stress Resilience


Folate vs Folic Acid

Folate is the natural form of Vitamin B9.

Folic acid is the synthetic form of the vitamin used in many supplements and as an additive to fortify food.

Folic acid does not have the same chemical makeup as folate, and folic acid does not occur naturally in food.

Folic acid is basically a folate knock-off.

To make this vitamin even trickier to understand, many people use the terms folate and folic acid interchangeably when talking about B9. But they are NOT the same thing. 

Folic acid as a supplement for B9 was introduced in the 1940s, but there are growing concerns about ingesting large amounts of this unnatural substance.

If you take folic acid supplements, your body needs to use four different biochemical reactions to convert the folic acid to useable folate. Some people’s genetics allow them to do this more easily than others.

There is recent research to suggest that folic acid at high doses may cause cancer or make cancer worse.

Sticking to folate instead seems like a better way to go.



Folate and Folic Acid Foods

Folic acid foods, folate foods, B9 foods


As I mentioned earlier, natural food sources of folic acid = zero.

When you find lists of folic acid foods, those lists are often equating folic acid with folate. 

Folic acid is added to some foods, such as processed grain products including cereals and breads. 

Folate, on the other hand, does show up in foods naturally.

Foods high in folate include:

  1. beef liver (highest source of folate)
  2. cruciferous vegetables (i.e. brussels sprouts, broccoli, kale)
  3. asparagus
  4. beans and lentils
  5. seafood (i.e. scallops, crab, or oysters)
  6. eggs
  7. citrus fruits (i.e. oranges)
  8. avocado


What to Look for in Folate Supplements

Natural vitamin B9 (folate) appears on supplement labels designated by several different terms such as:

  • folate,
  • L-methylfolate,
  • L 5 methyl-tetrahydrofolate (5-MTHF),
  • Metafolin (a folate patented by Merck), or
  • Deplin (a prescription form of L-methylfolate).

If the label says folic acid you’re getting the synthetic B9, not the natural.



A popular way to get Vitamin B9 as a supplement is in a B-complex supplement that includes all the B vitamins. (The various B vitamins potentially support each other in ways that science has not yet clearly identified.) 


Vitamin b9 and other b vitamins in B-complex


Most B-complex supplements have folic acid as vitamin B9. You have to be cautious about what you're actually getting and read the label.

Some examples of high-quality B-complex supplements with folate are:


Folate v Folic Acid Recommended Dose

The RDA (Recommended Daily Amount) for supplementing folate is 400 μg for adult women and men.

A UL (Upper Limit) of 1000 μg (1 mg) has been established for folic acid. There is no UL for actual folate. (See Folate - Health Professional Fact Sheet (


When to Take B Vitamins

Take your B vitamins in the morning and early afternoon because they can be energizing and could interfere with sleep if taken late in the day.

Some people feel nauseous after taking B vitamins. This can typically be alleviated by taking B supplements at the same time as eating a meal.


 Feed Your Calm: Anti-Anxiety Anti-Stress Diet and Supplement Tips for Stress Resilience

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  • Ann Silvers
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