Folate - L-5-MTHF

Name: Folate - L-5-MTHF
Brand: Thorne
SKU: product-0220
Price: 20.00 GBP
Availability: InStock
Rating: 4.8 (39 reviews)

£20.00

Thorne's Folate supplies L-5-methyltetrahydrofolate (L-5-MTHF), the biologically active form of folate that the body uses directly, without the conversion step required by folic acid.

Active folate for those with MTHFR gene variants
Supports healthy homocysteine levels in the blood
Critical nutrient for early pregnancy and neural tube development
Contributes to DNA synthesis and normal cell division
Bioavailable form — no conversion step required

4.8 (39 reflections)

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ThorneFolate - L-5-MTHF

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about this product.

Thorne's Folate supplies L-5-methyltetrahydrofolate (L-5-MTHF), the biologically active form of folate that the body uses directly, without the conversion step required by folic acid. A meaningful proportion of the population carries variants in the MTHFR gene that reduce their ability to convert synthetic folic acid into this usable form. For those individuals — and for anyone wanting reliable folate status — L-5-MTHF is the more dependable choice.

Folate is a B-vitamin with well-established roles in DNA synthesis, cell division, and the methylation cycle. Adequate methylation underpins everything from neurotransmitter production to homocysteine regulation. Elevated homocysteine is a recognised cardiovascular risk marker, and folate is one of the key nutrients studied for keeping it in range. Folate is also critical in early pregnancy: sufficient intake before and during the first trimester is strongly associated with reduced risk of neural tube defects, making this a first-line supplement for anyone planning a pregnancy or in the early weeks.

This suits people with confirmed MTHFR variants, those with elevated homocysteine on a blood panel, women of childbearing age, and anyone whose diet is low in leafy greens and legumes. Thorne is a brand our doctors use routinely in clinical practice, chosen for its manufacturing standards and consistent use of bioavailable ingredient forms rather than cheaper synthetic alternatives.

frequently asked.

What is the difference between L-5-MTHF and folic acid?

Folic acid is a synthetic form of folate that the body must convert into L-5-MTHF before it can be used. People with common MTHFR gene variants convert it less efficiently. L-5-MTHF bypasses that step entirely, providing the active form the body can use directly.

Do I need a genetic test before taking this?

No. While knowing your MTHFR status can be informative, L-5-MTHF is safe for the general population and is simply a more bioavailable choice regardless of genetics. If you have concerns about your methylation or homocysteine levels, a blood panel is a sensible starting point.

Is this suitable to take during pregnancy?

Folate is a recommended supplement before conception and throughout the first trimester. However, confirm the correct dose for your situation with your GP or midwife, as requirements can vary.

Can I take this alongside a B-complex or prenatal multivitamin?

It is worth checking the folate content of any other supplement you are already taking to avoid unintentionally high combined intake. Review with your doctor or pharmacist if you are unsure.

How long does it take to see a difference in folate or homocysteine levels?

Blood folate levels typically respond within a few weeks of consistent supplementation, while changes in homocysteine may take longer to become apparent on a panel. Retesting after 8–12 weeks is a reasonable way to assess your response.

Customer reflections

Overall sentiment

4.839 reflections

1 – 6 of 39 reflections

QQVerified Buyer

The first adrenal support that made a quick difference.

4 days ago

Gentle on a sensitive stomach, and I feel like myself again. I had tried two other glandulars before this and neither sat right.

MRVerified Buyer

Steadier mornings within a fortnight.

1 week ago

I was sceptical about glandulars, but my mid-afternoon crash has genuinely eased. One capsule with breakfast and I forget about it.

ALVerified Buyer

Subtle, but real.

2 weeks ago

Not a stimulant, which is exactly what I wanted. It took about ten days, then I realised I wasn’t dreading the afternoon any more.

SKVerified Buyer

My clinician recommended it.

3 weeks ago

Bought after a blood panel flagged a flat cortisol curve. Easy to take, no jitters, and the sourcing is refreshingly transparent.

TPVerified Buyer

Recovery feels faster.

1 month ago

Training hard through a stressful stretch and this has helped me bounce back between sessions. Already on my second bottle.

DVVerified Buyer

Does what it says.

1 month ago

No frills, one ingredient, a sensible dose. I appreciate that it is designed to be used for a season rather than forever.

Folate - L-5-MTHF

about this product.

how to take it

frequently asked.

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