

🧬 Elevate your health game with the active folate that champions trust!
Thorne's 5-MTHF delivers 1mg of bioactive methylfolate per serving, expertly formulated to support methylation, cardiovascular health, nerve function, and fetal development. Backed by 4 rounds of rigorous testing and trusted by over 100 professional sports teams and healthcare practitioners, this clean, high-purity supplement is ideal for those seeking superior folate bioavailability, especially individuals with MTHFR gene variations.


















| ASIN | B00FY8IQ7C |
| Best Sellers Rank | #2,276 in Health & Household ( See Top 100 in Health & Household ) #2 in Vitamin B9 (Folic Acid) Supplements |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,783) |
| Date First Available | December 10, 2007 |
| Is Discontinued By Manufacturer | No |
| Item model number | B129 |
| Manufacturer | Thorne Research |
A**S
Excellent Bioavailability with Noticeable Health Benefits
I started taking Thorne 5-MTHF after genetic testing revealed I have MTHFR mutations that affect my body's ability to process regular folic acid. My functional medicine doctor specifically recommended this Thorne product for its superior quality and bioavailable form of folate, and I've been consistently impressed with both the product quality and the health improvements I've experienced. What sets this supplement apart is the methylated form of folate, which bypasses the genetic conversion issues that affect many people. Within a few weeks of starting this supplement, I noticed improvements in my energy levels and overall sense of well-being that I hadn't experienced with regular B-vitamin complexes. My follow-up lab work showed significant improvement in my homocysteine levels, which was exactly what my doctor was hoping to achieve. The quality control and purity that Thorne is known for is evident in this product. The capsules are clean with no unnecessary fillers or artificial ingredients, and I've experienced no digestive upset or side effects. The dosing is appropriate and easy to incorporate into my daily supplement routine. The cardiovascular and neurological support benefits align perfectly with what my healthcare provider explained about methylfolate's role in cellular function. I feel confident knowing this is supporting my body's methylation processes that are crucial for so many aspects of health. The packaging protects the supplements well, and the expiration dates are always well into the future, indicating proper storage and handling. Highly recommend for anyone needing bioavailable folate, especially those with MTHFR mutations - excellent quality from a trusted brand that healthcare providers consistently recommend.
C**A
High-Quality Active Folate That Makes a Noticeable Difference
I've been taking these for several months now, primarily because I have the MTHFR gene variation that makes it hard to process regular folic acid. Pros: -Bioavailability: Unlike synthetic folic acid, this is already in the methylated form, so my body can use it directly. I've noticed improved energy levels, better mood stability, and less of the "foggy" feeling I used to live with. -Purity & Quality: Thorne is known for third-party testing and minimal fillers, just cellulose capsule and the active ingredients. No gluten, dairy, or unnecessary additives. Perfect for people with sensitivities. -Supports Key Areas: It's great for methylation support, homocysteine regulation, nerve health, and overall cardiovascular wellness. -Easy to Take: Super small capsules, 60 per bottle (2-month supply at 1 per day), no taste or aftertaste. Cons (very minor): It's premium-priced compared to generic folic acid supplements, but you get what you pay for in terms of purity and effectiveness. If you're new to methylfolate, start slow, some people experience mild overstimulation at first (I didn't, but it's common advice). This has become a non-negotiable in my daily stack. If you need active B9 folate, Thorne's 5-MTHF is top-tier. Highly recommend! ⭐⭐⭐⭐⭐
M**R
Amazing little super pill
My 12 year old son is on the autism spectrum and has eosinophilic esophagitis (EoE). He takes several medications to manage the symptoms of his autism and has a very limited diet due to his EoE. While he doesn’t necessarily have a diagnosis of anxiety or ADHD, his autism presents those symptoms due to issues with the executive functioning in his brain. His poor diet leaves him with low folate levels and low iron as well which on top of making him feel crummy sometimes, impacts his mood and mental state. Our neuropsychiatrist did a cheek swab DNA test on my son to assess how he metabolizes medications as well as identify genetic indicators to help us narrow down which medications will work best for him. We found that he poorly processes folate which in turn means he doesn’t absorb as much of his medications as he should. He already struggles with getting enough folate in his diet and to not absorb it properly only makes matters worse. She recommended we augment his diet/medications with an L- methylfolate supplement. It would in theory increase the effectiveness of his medications and ultimately reduce the dosage levels of his medications as it allows his body to better absorb the medications as well as improve his overall health. Originally we attempted to get this as a prescription but due to the nature of our prescription insurance they only allowed us to obtain it via mail. The doctor ordered twice and it never showed. For over a year my son took his medications without the supplement and we were always having to tweak the dosage or timing as he just wasn’t getting the duration of “coverage” from the meds as he should. Over the summer, we usually like to take a break from a lot of his medications (like ADHD meds). I remembered we were wanting to try this supplement and I know this type of supplement normally helps with energy, focus and mood. I ordered it at the beginning of summer and as we weaned my son off all but one medication, he remained stable and had little to no change in his disposition or functionality thanks to this pill. He takes one in the morning daily and he reports it helps him feel focused, less anxious or irritable, he is in a good mood, and isn’t groggy or feel fuzzy like some of his prescriptions make him feel. When he started 6th grade this past August, we decided to not put him on ADHD meds to help him focus on school because he was doing so well without it. We reduced the dosage of his anxiety meds and haven’t had to increase his mood stabilizer and kept it on the lowest dose to help with his anxiety and impulsivity which usually looks like ADHD in a school setting. Despite moving up to middle school with an increased course load and difficulty in material, he’s doing better this year than he ever has. He has high functioning autism and has a high IQ but has always struggled with focus and staying on task as he easily gets bored or distracted. Supplementing his medications with this is without a doubt a game changer. There are days where we have forgotten to give it to him and it isn’t super obvious but something is definitely off. It makes a difference; it fine tunes and increases the benefits we see from his medications. It also seems to help his overall health and he’s finally grown taller and gained weight thanks to being able to better absorb nutrients from his diet which has always been a struggle. It has worth every penny paying out of pocket for this supplement. It helps that Amazon has a discount when you subscribe and I qualify for the 15% discount which makes a difference. I highly recommend this for anyone whose doctor has advised they supplement their diet with L-methyfolate.
C**Y
Excellent Quality!
Excellent Quality. Great brand. Would buy again and again
M**Y
Good Quality for a good price
Seems to work just as well as pricier brands. I’ve went through several bottles with no complaints.
K**R
Amazing product!
My depression and anxiety are way better, my mood is up 70%! I have been taking it for 2 months! I am down 15 lbs also! And a fantastic company across the board. High standards and 3rd party testing. Highly recommend!
A**R
Quality product!
This is a quality product. I use it to replace folate that is depleted from a medication I take and it works amazing!
R**A
ok
R**A
This is the best product for me. But its bit costly . It worth it
S**R
great
A**A
Prescribed by a doctor for hair treatment