Vitamin B9 (folate, folic acid)

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24 products

Vitamin B9 refers to the folates naturally present in food and to folic acid, its synthetic form. In supplements, it is also found in “methylated” form (5-MTHF), the form that circulates in the blood.

Discover its recognised benefits, the foods that contain it, the difference between its forms and our selection.

Vitamin B9 (folate, folic acid) | NATURAMedicatrix

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Discover our top 3 products Vitamin B9 (Folic Acid)

Aminobase

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Endocriway AI

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Endocriway AI

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Endocriway Digest

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B-Kudzu

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€34.69 €36.90

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Memorix

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Fertilhom®

20 sachets

€34.90 €49.90

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Dopanor-AD

60 vegetable capsules

€29.90

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Folique activ' (active vitamin B9, 5-MTHF)

60 vegetable capsules

€21.50

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Multivitamin (B-Methyl-Homocysteine)

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Neuro-AD Gummies (Strawberry & Raspberry)

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Aphrosia

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Erosforce

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Ergynatal

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Marine magnesium FORT

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Neuro-Tonic strong

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Neuro-AD Concentration

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Ergytonic Intense

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Serenity Mix

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Immuno-Muqueuse: immunity & mucous membranes, 320 g | Dr. Jacob’s®

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Active ingredients guide

Vitamin B9: folates, folic acid and methylated form

Vitamin B9 is a water-soluble B vitamin. The term folates is used for the forms naturally present in food, and folic acid for its synthetic form, used in supplements and fortified foods.

Its name comes from the Latin folium, “leaf”, as it was first isolated from spinach leaves. The body does not make it, so it must be supplied every day by the diet.

200 µg per day

The adult reference intake used on European labelling.

A fragile vitamin

Folates are sensitive to heat, light and cooking water.

Several forms

Dietary folates, folic acid and 5-MTHF, known as the “methylated” form.

Recognised benefits

The recognised benefits of vitamin B9

The European Union authorises eight health claims for folate:

Cell division

Folate has a role in the process of cell division.

Pregnancy

Folate contributes to maternal tissue growth during pregnancy.

Blood formation

Folate contributes to normal blood formation.

Amino acids

Folate contributes to normal amino acid synthesis.

Homocysteine

Folate contributes to normal homocysteine metabolism.

Psychological function

Folate contributes to normal psychological function.

Immune system

Folate contributes to the normal function of the immune system.

Fatigue

Folate contributes to the reduction of tiredness and fatigue.

Food sources

Which foods are rich in vitamin B9?

Folates are found mainly in dark green leafy vegetables (spinach, watercress, lamb’s lettuce), asparagus, cabbages, pulses (lentils, chickpeas, dried beans), nutritional yeast and liver. Eggs, mature cheeses and certain fruits also supply them.

As folates break down with heat and leach into cooking water, it is best to eat some of these vegetables raw or steamed.

Forms and intake

Folic acid or methylated vitamin B9 (5-MTHF)?

Folic acid is a stable form, but the body has to convert it in several steps before using it. 5-methyltetrahydrofolate (5-MTHF), or “methylated” vitamin B9, is the main form circulating in the blood: it does not require these conversion steps. This is an advantage for people who carry a common variant of the MTHFR gene, which reduces the activity of one of the enzymes involved.

In supplements, 5-MTHF is available notably as a glucosamine salt (Quatrefolic®) or as a calcium salt (calcium L-methylfolate).

The reference intake (RI) is 200 µg per day. Do not exceed the dose stated on the label. If you are pregnant or planning a pregnancy, ask your doctor or midwife for advice.

Buying guide

How to choose a vitamin B9 supplement?

The form

Folic acid or 5-MTHF: this is stated in the list of ingredients.

The dosage

Expressed in micrograms (µg) and as a percentage of the reference intake.

On its own or combined

On its own, or with vitamins B6 and B12, which are also involved in homocysteine metabolism.

The format

Capsules, tablets or gummies: choose the one that suits you day to day.

Our selection

Our vitamin B9 supplements

The three formulas below provide vitamin B9 in methylated form. Find all our products containing vitamin B9 in the list above.

Folique activ’ — 60 vegetable capsules

Vitamin B9 on its own: 400 µg of Quatrefolic® 5-MTHF per capsule (200% of the RI).

Discover Folique activ’ →

Multivitamines B-Methyl-Homocysteine — 60 capsules

200 µg of 5-MTHF per capsule, with active vitamins B6 and B12, betaine and choline.

Discover Multivitamines B-Methyl →

Ergynatal — 180 capsules

A vitamin and mineral formula for women, with 400 µg of methylated vitamin B9 per 2 capsules.

Discover Ergynatal →

Frequently asked questions

Vitamin B9 FAQ

Are folic acid and vitamin B9 the same thing?

Folic acid is one form of vitamin B9: its synthetic form. Vitamin B9 also includes dietary folates and 5-MTHF.

What does “methylated vitamin B9” mean?

It is 5-methyltetrahydrofolate (5-MTHF), the form of folate that circulates in the blood. It can be used directly, without prior conversion.

Is there a natural vitamin B9?

Yes: the folates in green vegetables, pulses and liver. Folic acid, on the other hand, is produced synthetically.

Vitamin B9 in capsules or gummies?

Capsules allow precise, sugar-free dosing. Our Neuro-AD and Defensup gummies also contain methylated vitamin B9, combined with other nutrients.

Where can you buy vitamin B9?

In pharmacies, organic shops or online. At NATURAMedicatrix, Folique activ’ provides vitamin B9 on its own, in methylated form.

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Call us: +3242900070
Fax: +324 341 29 21
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NATURAMedicatrix
8, Hannert dem Duarref
9772 Troine (Wincrange)
Luxembourg
Call us: +3242900070
Fax: +324 341 29 21
Email us:

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Vitamin B9: folates, folic acid and methylated form

The recognised benefits of vitamin B9

Cell division

Pregnancy

Blood formation

Amino acids

Homocysteine

Psychological function

Immune system

Fatigue

Which foods are rich in vitamin B9?

Folic acid or methylated vitamin B9 (5-MTHF)?

How to choose a vitamin B9 supplement?

The form

The dosage

On its own or combined

The format

Our vitamin B9 supplements

Folique activ’ — 60 vegetable capsules

Multivitamines B-Methyl-Homocysteine — 60 capsules

Ergynatal — 180 capsules

Vitamin B9 FAQ

Are folic acid and vitamin B9 the same thing?

What does “methylated vitamin B9” mean?

Is there a natural vitamin B9?

Vitamin B9 in capsules or gummies?

Where can you buy vitamin B9?

Nos actifs incontournables