Folate (folic acid)
Synopsis
Folate, also known as vitamin B9, is a water-soluble B vitamin naturally found in leafy greens, legumes, citrus fruits, liver, and fortified grains. It plays a vital role in DNA synthesis, cell division, and methylation processes, making it especially crucial during periods of rapid growth such as pregnancy, infancy, and adolescence. The naturally occurring form in foods is called folate, while the synthetic version used in supplements and fortified foods is folic acid.
In the body, folate is involved in converting homocysteine to methionine, which is essential for cardiovascular health and neurotransmitter production. Adequate folate levels are also critical for preventing neural tube defects in developing fetuses, which is why supplementation is strongly recommended for women of childbearing age. Folate deficiency can lead to megaloblastic anemia, fatigue, irritability, poor concentration, and increased risk of birth defects or cardiovascular issues.
Supplemental folate is often used to support brain health, mood regulation, fertility, cardiovascular function, and detoxification pathways. Newer supplement forms include methylfolate (5-MTHF), the bioactive form of folate that bypasses common genetic polymorphisms (such as MTHFR mutations) that can impair folic acid conversion in some individuals.
Historical Use
Though the chemical identity of folate wasn’t discovered until the 20th century, the importance of folate-rich foods in health was recognized for centuries, especially in relation to blood and pregnancy. In traditional diets around the world, dark leafy greens, legumes, and organ meats—all high in natural folate—were staples, especially for pregnant and nursing women.
In Ayurvedic and Traditional Chinese Medicine, foods rich in folate were often included in tonic and blood-building formulas to address fatigue, anemia, or menstrual imbalances. For example, lentils, spinach, and beets (all folate-rich) were frequently recommended for promoting vitality and reproductive health.
Folate itself was first isolated in the 1940s from spinach leaves, a discovery driven by research into nutritional factors that could treat megaloblastic anemia. The synthetic form, folic acid, was later developed and introduced into prenatal supplements and fortified foods. In the 1990s, many countries mandated folic acid fortification in grains to reduce the risk of neural tube defects—a public health strategy that significantly lowered birth defect rates.
Today, folate is a cornerstone of preventive medicine, bridging modern nutritional science with the historical practice of using food as medicine. Its discovery and integration into global health policy mark one of the most impactful applications of nutritional biochemistry in clinical and public health settings.
Uses: Health Conditions
Anemia (Traditional)
Apathy (Traditional)
Birth Defects (prevention) (Traditional)
Bulimia (Traditional)
Burning Feet or Hands (Traditional)
Canker Sores (Traditional)
Down Syndrome (Traditional)
Energy (lack of) (Traditional)
Fatigue (Traditional)
Pap Smear (abnormal) (Traditional)
Pernicious Anemia (Traditional)
Reye's Syndrome (Traditional)
Products containing this ingredient
Thorne
5-MTHF 1 mg Folate
Thorne
5-MTHF 5 mg Folate
Integrative Therapeutics
Active B-Complex
Vitabase
Active Man's Formula
Vitabase
Active Woman's Multi
Metagenics
AdvaClear
Metagenics
AdvaClear
Thorne
Advanced Bone Support Oscap
Thorne
Advanced Nutrients Multivitamin
Metagenics
ArginCor®
Metagenics
Arginine Plus™
Metagenics
Axis Endo™ Mango
Douglas Laboratories
B-Complex
Vitabase
B-Complex 100 mg Sustained Release
Thorne
B-Complex #12
Thorne
B-Complex #6
Pure Encapsulations
B-Complex Plus
Pure Encapsulations
B-Complex Plus
Designs For Health
B-Supreme
Designs For Health
B-Supreme
Pure Encapsulations
B12 Folate
Pure Encapsulations
B6 Complex
Pure Encapsulations
B6 Complex
Thorne
Basic B Complex
Thorne
Basic Nutrients 2/Day Multivitamin
Thorne
Basic Prenatal Multivitamin
Metagenics
Blisphora®
Thorne
Catalyte
Metagenics
Ceralin® Forte
Vitabase
Cholesterol Support
Metagenics
Clear Change 10-Day Detox Program with UltraClear Plus Berry
Metagenics
Clear Change 10-Day Detox Program with UltraClear Plus pH
Metagenics
Clear Change 10-Day Detox Program with UltraClear Plus pH Pineapple Banana
Metagenics
Clear Change 10-Day Detox Program with UltraClear Plus Pineapple Banana
Metagenics
Clear Change 10-Day Detox Program with UltraClear Plus Vanilla
Metagenics
Clear Change 10-Day Detox Program with UltraClear RENEW Berry
Metagenics
Clear Change 10-Day Detox Program with UltraClear RENEW Chai
Metagenics
Clear Change 10-Day Detox Program with UltraClear RENEW Vanilla
Metagenics
Clear Change 28-Day Detox Program with UltraClear Plus Berry
Metagenics
Clear Change 28-Day Detox Program with UltraClear Plus pH Pineapple Banana
Metagenics
Clear Change 28-Day Detox Program with UltraClear Plus pH Vanilla
Metagenics
Clear Change 28-Day Detox Program with UltraClear Plus Pineapple Banana
Metagenics
Clear Change 28-Day Detox Program with UltraClear Plus Vanilla
Metagenics
Clear Change 28-Day Detox Program with UltraClear RENEW Berry
Metagenics
Clear Change 28-Day Detox Program with UltraClear RENEW Chai
Metagenics
Clear Change 28-Day Detox Program with UltraClear RENEW Vanilla
Metagenics
Clear Change Daily Essentials
Integrative Therapeutics
Clinical Nutrients HP
Thorne
Craving and Stress Support Relora Plus
Integrative Therapeutics
Detoxication Factors
Designs For Health
DFH Complete Multi™
Designs For Health
DFH Complete Multi™ with Copper
Designs For Health
DFH Complete Multi™ with Copper & Iron
Pure Encapsulations
DopaPlus
Vitabase
Easy Iron
Pure Encapsulations
Energize Plus™ Pure Pack
Metagenics
EstroFactors®
Metagenics
Fem Prenatal®
Designs For Health
FemGuard+Balance™
Thorne
Ferrasorb
Metagenics
FolaPro
Pure Encapsulations
Folate 1,000
Pure Encapsulations
Folate 400
Pure Encapsulations
Folate 5,000
Pure Encapsulations
Folate 5,000 Plus
Pure Encapsulations
Folic Acid
Metagenics
GI Sustain™ Powder
Metagenics
Glutagenics
Integrative Therapeutics
Glycemic Manager
Metagenics
Glycogenics
Vitabase
Hair, Skin & Nails Formula
Pure Encapsulations
Hair/Skin/Nails Ultra
Metagenics
Hemagenics
Metagenics
Hemagenics
Metagenics
HerSynergy®
Pure Encapsulations
Homocysteine Factors
Pure Encapsulations
Homocysteine Factors
Designs For Health
Homocysteine Supreme™
Designs For Health
Homocysteine Supreme™
Metagenics
Intrinsi B-12 Folate
Metagenics
Intrinsi B12-Folate
Integrative Therapeutics
Iron Complex
Integrative Therapeutics
K-PAX MitoNutrients
Metagenics
Ketogenic Shake Chocolate
Metagenics
Ketogenic Shake Vanilla
Klean Athlete
Klean B-Complex
Klean Athlete
Klean Multivitamin ™
Designs For Health
L-5-MTHF 1700MCG
Designs For Health
L-5-MTHF 8500 MCG
Thorne
L-Arginine Plus Perfusia Plus
Vitabase
Life's Essentials Plus
Metagenics
Lipo-Gen™
Metagenics
Lipo-Gen
Designs For Health
Liposomal B Supreme
Integrative Therapeutics
Lipotropic Complex
Pure Encapsulations
Lipotropic Detox
Integrative Therapeutics
Liquid Iron
Thorne
MediClear Plus
Thorne
Men's Multi 50+
Metagenics
Meta-Sitosterol™ 2.0
Designs For Health
Metabolic Synergy™
Designs For Health
Metabolic Synergy™
Metagenics
MetaGlycemX™
Metagenics
MetaGlycemX
Metagenics
MetaKids Multi Soft Chew Grape
Metagenics
MetaKids Nutrition Powder Chocolate
Metagenics
MetaKids Nutrition Powder Vanilla
Metagenics
MetaRelax®
Douglas Laboratories
Methyl B12 Plus
Douglas Laboratories
Methyl Folate
Douglas Laboratories
Methyl Folate
Douglas Laboratories
Methyl Folate 5 mg
Thorne
Methyl-Guard
Thorne
Methyl-Guard Plus
Pure Encapsulations
MethylAssist
Metagenics
MethylCare
Metagenics
MitoVive
Designs For Health
Mood-Stasis™
Pure Encapsulations
Multi t/d
Pure Encapsulations
Multi t/d
Thorne
Multi-Vitamin Elite NSF
Thorne
Multi-Vitamin Elite NSF
Metagenics
Multigenics®
Metagenics
Multigenics Chewable Orange
Metagenics
Multigenics Intensive Care
Metagenics
Multigenics Intensive Care without Iron
Metagenics
Multigenics without Iron
Integrative Therapeutics
Multiplex-1 No-Iron
Pure Encapsulations
NeuroMood Pure Pack
Pure Encapsulations
NeuroPure
Designs For Health
NeuroRenew™
Designs For Health
NOx Synergy™
Pure Encapsulations
Nutrient 950®
Pure Encapsulations
Nutrient 950®
Pure Encapsulations
Nutrient 950®
Pure Encapsulations
Nutrient 950® A without Copper & Iron
Pure Encapsulations
Nutrient 950® with NAC
Pure Encapsulations
Nutrient 950® with Vitamin K
Pure Encapsulations
Nutrient 950® without Copper, Iron & Iodine
Pure Encapsulations
Nutrient 950® without Iron
Pure Encapsulations
Nutrient 950® without Iron
Integrative Therapeutics
Nutrivitamin No-Iron
Pure Encapsulations
O.N.E.™ Multivitamin
Pure Encapsulations
O.N.E.™ Multivitamin
Pure Encapsulations
O.N.E.™ Multivitamin
Designs For Health
OcuForce™
Integrative Therapeutics
Osteoprime Forte
Integrative Therapeutics
Osteoprime Ultra
Thorne
Ovarian Care
Designs For Health
PaleoCleanse Plus™
Designs For Health
PaleoCleanse Plus™
Designs For Health
PaleoCleanse Plus™ Detox Program
Designs For Health
PaleoCleanse Plus™Chocolate Detox Kit
Designs For Health
PaleoMeal®
Designs For Health
PaleoMeal®
Integrative Therapeutics
Physicians Elemental Diet Dextrose Free
Integrative Therapeutics
Physician's Elemental Diet
Integrative Therapeutics
Physician's Elemental Diet
Integrative Therapeutics
Physicians Elemental Diet Kit
Metagenics
PhytoMulti™ Multivitamin
Metagenics
PhytoMulti With Iron
Metagenics
PhytoMulti Without Iron
Metagenics
PhytoMultivitamin
Designs For Health
Plant Protein Cleanse
Designs For Health
Plant Protein Cleanse Plus™ 570g
Designs For Health
Plant Protein Meal
Designs For Health
Plant Protein Meal Plus
Designs For Health
Plant Protein Meal
Metagenics
PlusOne® Daily Prenatal Packs
Pure Encapsulations
Polyphenol Nutrients
Pure Encapsulations
Polyphenol Nutrients
Douglas Laboratories
Prenatal
Pure Encapsulations
PreNatal Nutrients
Pure Encapsulations
PreNatal Nutrients
Designs For Health
Prenatal Pro™
Designs For Health
Primal Multi™
Integrative Therapeutics
ProThrivers Multivitamin
Pure Encapsulations
PureGenomics® B-Complex
Pure Encapsulations
PureGenomics® Multivitamin
Pure Encapsulations
PureGenomics® UltraMultivitamin
Pure Encapsulations
PureLean® Protein
Pure Encapsulations
PureMelt B12 Folate
Pure Encapsulations
PurePals
Pure Encapsulations
PurePals with Iron
Pure Encapsulations
PureResponse™ Multivitamin
Douglas Laboratories
Relora ®-Plex
Metagenics
Renagen™ DTX
Pure Encapsulations
RevitalAge™ Nerve
Designs For Health
SAMe
Designs For Health
SAMe
Pure Encapsulations
SeroPlus
Metagenics
SeroSyn
Thorne
Stress B-Complex
Douglas Laboratories
Stress-B-Plus ™
Designs For Health
Super Liquid Folate
Vitabase
Super Stress Formula
Metagenics
Testralin®
Designs For Health
Trifolamin™ lozenges
Designs For Health
Twice Daily Essential Packets
Designs For Health
Twice Daily Multi™
Designs For Health
Twice Daily Multi™
Designs For Health
Twice Daily Multi™
Douglas Laboratories
Ultra B-Complex
Pure Encapsulations
Ultra B-Complex with PQQ
Designs For Health
Ultra B12-Folate
Metagenics
Ultra Glucose Control® Chocolate
Metagenics
Ultra Glucose Control Chocolate
Metagenics
Ultra Glucose Control Vanilla
Metagenics
Ultra Glucose Control Vanilla
Douglas Laboratories
Ultra Preventive
Douglas Laboratories
Ultra Preventive
Douglas Laboratories
Ultra Preventive ® 2 Daily
Douglas Laboratories
Ultra Preventive 50+ -EZ Swallow
Douglas Laboratories
Ultra Preventive ®-EZ Swallow
Douglas Laboratories
ULTRA PREVENTIVE® III W/COPPER
Douglas Laboratories
Ultra Preventive ® Kids Grape Flavor
Douglas Laboratories
Ultra Preventive ® Kids Orange Flavor
Douglas Laboratories
Ultra Preventive One Daily
Douglas Laboratories
Ultra Preventive® X
Douglas Laboratories
Ultra Protein Green
Pure Encapsulations
Ultra Pure Pack
Metagenics
UltraClear Detox Powder
Metagenics
UltraClear Plus® Detox Powder
Metagenics
UltraClear Plus Detox Powder Berry
Metagenics
UltraClear Plus Detox Powder Pineapple/Banana
Metagenics
UltraClear Plus pH Detox Powder Pineapple/Banana
Metagenics
UltraClear Plus pH Detox Powder Vanilla
Metagenics
UltraClear RENEW Detox Powder Berry
Metagenics
UltraClear RENEW Detox Powder Chai
Metagenics
UltraClear RENEW Detox Powder Vanilla
Pure Encapsulations
UltraDetox 10-Day Pure Pack
Metagenics
UltraGI Replenish® Chocolate
Metagenics
UltraGI Replenish Chocolate
Metagenics
UltraGI Replenish Vanilla
Metagenics
UltraGI Replenish Vanilla
Metagenics
UltraInflamX Plus 360°® Chocolate/Orange
Metagenics
UltraInflamX Plus 360° Mango
Metagenics
UltraInflamX Plus 360° Mango
Metagenics
UltraInflamX Plus 360° Orange
Metagenics
UltraInflamX Plus 360° Original Spice
Metagenics
UltraInflamX Plus 360° Pineapple/Banana
Metagenics
UltraInflamX Plus 360° Pineapple/Banana
Metagenics
UltraMeal Advanced Protein® Dutch Chocolate
Metagenics
UltraMeal Advanced Protein French Vanilla
Metagenics
UltraMeal Advanced Protein Plain
Metagenics
UltraMeal Cardio 360°® Pea/Rice Chocolate
Metagenics
UltraMeal Cardio 360° Pea/Rice Vanilla
Metagenics
UltraMeal® Daily Support Dutch Chocolate
Metagenics
UltraMeal Daily Support Mixed Berry
Metagenics
UltraMeal Rice Vanilla
Pure Encapsulations
UltraNutrient®
Pure Encapsulations
UltraNutrient®
Pure Encapsulations
UltraNutrient®
Pure Encapsulations
VisionPro Nutrients
Metagenics
Wellness Essentials Active Daily Packs
Metagenics
Wellness Essentials Brain Health Daily Packs
Metagenics
Wellness Essentials® Daily Packs
Metagenics
Wellness Essentials Healthy Balance Daily Packs
Metagenics
Wellness Essentials Men's Vitality Daily Packs
Metagenics
Wellness Essentials Women's Daily Packs
Metagenics
Wellness Essentials Women's Prime Daily Packs
Thorne
Women's Multi 50+
Pure Encapsulations
Women's Nutrients
Pure Encapsulations
Women's Nutrients
Designs For Health
Women's Twice Daily Essential Packets