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Vitamin · in-depth review

Vitamin B9 (Folate/Folic Acid)

Vitamin B9 (Folate/Folic Acid)

Folate, as tetrahydrofolate, carries one-carbon units. Nucleic-acid synthesis and red-cell maturation both depend on it. Leafy greens, legumes, and fortified grains are the main sources.

Also known asFolic AcidFolate5-MTHFFolate/Folic Acid
Related symptomsFatigueLow mood

Marked asPrimarySupporting

Primary

Promotes nucleic-acid synthesis

Tetrahydrofolate hands methyl and methylene groups to nucleotide synthesis so DNA replication can finish. Tissues that turn over fast, such as bone marrow and intestinal mucosa, are most sensitive to folate. Spinach, choy sum, dried beans, and fortified bread are everyday sources; in people who eat few vegetables, mouth ulcers, tongue pain, and fatigue can come from this path.

Primary

Promotes blood formation

Red-cell precursors replicate DNA in bulk; when folate is short, nuclear maturation lags behind the cytoplasm and megaloblasts form. Vegetarians often have enough folate; conversely, when the diet is mostly meat and few vegetables, what is missing is often folate. Fatigue, a fast heartbeat, and a smooth tongue surface can appear together with this hematopoietic path.

Primary

Supports neural-tube closure when preparing for pregnancy

The neural tube closes in early pregnancy, and rapidly dividing neural cells especially depend on folate to finish nucleic-acid synthesis. Green leafy vegetables, legumes, and fortified grains are the dietary entry points; topping up this one-carbon unit when preparing for pregnancy and in early pregnancy gives neural-tube closure enough raw material.

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Fatigue

Tetrahydrofolate hands methyl and methylene groups to nucleotide synthesis so DNA replication can finish. People who cannot get going by day and feel foggy in the afternoon more often notice stamina for tasks and mental freshness after several continuous weeks.

Low mood

Tetrahydrofolate hands methyl and methylene groups to nucleotide synthesis so DNA replication can finish. People who cannot get going and feel less interest in usual likes more often notice mood-scale scores and daytime interest after several continuous weeks.

Neural tube defect risk

The neural tube closes in early pregnancy, and rapidly dividing neural cells especially depend on folate to finish nucleic-acid synthesis. People watching neural-tube development in preconception or early pregnancy more often notice nutritional preparation and following clinical advice after several continuous weeks.

Megaloblastic anaemia

Red-cell precursors replicate DNA in bulk; when folate is short, nuclear maturation lags behind the cytoplasm and megaloblasts form. People with fatigue and a smooth tongue already tracking megaloblastic anaemia more often notice spirits and blood-cell markers after several continuous weeks.

Major depressive disorder

Tetrahydrofolate hands methyl and methylene groups to nucleotide synthesis so DNA replication can finish. People with fading interest and hard mornings who already track mood scales more often notice support in scores and daytime function after several continuous weeks.

With foodMay be taken on an empty stomach or with food; if it bothers you, switch to after a meal
Best timeMorning or midday
SolubilityWater-soluble

Folic acid and folate use different units; convert using the product label.

General wellness400 mcg DFE/day for adults; 600 mcg DFE/day in pregnancy
Specific needsThe adult daily safety upper limit is 1,000 mcg synthetic folic acid; higher doses for neural-tube-defect prevention must be prescribed by a clinician, and do not exceed this on your own long term.

How oftenUse daily before conception and in early pregnancy as advised; others should judge need from diet.

Cautions

Pregnant people should supplement as directed by a clinician.

High-dose folate may mask vitamin B12 deficiency; assess B12 status before long-term use.

Interactions

  1. Antifolates such as methotrexate (oncology/rheumatology must direct use)
  2. Antiepileptic drugs (may affect folate status)
Common side effects

· Usual doses are generally well tolerated

Rare but important

· High doses may mask blood abnormalities caused by B12 deficiency.

Long-term dependenceDoes not cause addiction or typical tolerance.

Sources

These are institution pages you can check—not a certification of this ingredient.

Medical disclaimerThis page is compiled by the HerbBB editorial team for general health information only. It is not a substitute for advice from a doctor, pharmacist, or other qualified clinician. If you have a health condition, take medicines, or are pregnant or breastfeeding, speak with a professional first.