L-5-MTHF Natural S-Isomer Ingredients & Drug Interactions
What is this page for?
First and foremost: checking L-5-MTHF Natural S-Isomer against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
L-5-MTHF Natural S-Isomer is a dietary supplement by Designs for Health with 1 active ingredient.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of L-5-MTHF Natural S-Isomer by Designs for Health
Four independent checks of what is known — a summary of the available information, not a grade of the product itself.
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
None of the active ingredients could be matched to our evidence database, so intended use can't be graded.
Why this rating?
- None of the active ingredients could be matched to a HelloPharmacist monograph, so intended use can't be graded against our evidence data.
Every active ingredient lists its own amount on the label.
Why this rating?
- The label discloses an exact amount for 1 of its 1 active ingredient.
- “Folate” is listed as a grouped ingredient — the label gives one combined amount (1,000 mcg) without saying how much of each component you get.
None of the active ingredients could be matched to our interaction database.
Why this rating?
- We couldn't match any ingredient to a HelloPharmacist monograph, so there was nothing to check interactions against.
None of the active ingredients could be matched to our safety data.
Why this rating?
- We couldn't match any ingredient to a HelloPharmacist monograph, so there was no safety data to measure.
HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Medication interactions could not be assessed, and safety information could not be assessed.
Assessment coverage: 0 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jul 25, 2013.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about L-5-MTHF Natural S-Isomer, straight from the product label.
| Brand | Designs for Health |
|---|---|
| Barcode (UPC) | 879452002784 |
| Net contents | 120 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jul 25, 2013 |
| DSLD ID | 22475 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for L-5-MTHF Natural S-Isomer by Designs for Health, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Folate | 1000 mcg | 250% |
| Quatrefolic (6S)-5-Methyltetrahydrofolate Glucosamine Salt | 2000 mcg | -- |
Other ingredients: Microcrystalline Cellulose, spinach juice powder, L-Leucine
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements
L-5- MTHF is the natural, biologically active form of folate. It offers the benefits of optimal folate supplementation without the potential risks associated with chronic exposure to unmetabolized synthetic folic acid.
Notice: Color, size or shape may appear different between lots.
For Professional Use Only
Brand IP Statement(s)
Quatrefolic(R) is covered by U.S. Patent No. 7,947,662 and is a registered trademark of Gnosis S.p.A.
Seals/Symbols
Quatrefolic(R)
MADE WITH NON-GMO INGREDIENTS
Guaranteed GMP CERTIFIED Products
Storage
STORE IN A COOL, DRY PLACE.
Precautions
KEEP OUT OF REACH OF CHILDREN.
Formulation
Does not contain gluten.
General
MTH120-2
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Recommended Use: As a dietary supplement, take one capsule per day, or as directed by your health care practitioner.
Formula
Methylsulfonylmethane
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
L-5-MTHF Natural S-Isomer by Designs for Health label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in L-5-MTHF Natural S-Isomer by Designs for Health
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.
Folate
- › Quatrefolic (6S)-5-Methyltetrahydrofolate Glucosamine Salt
Other (inactive) ingredients: Microcrystalline Cellulose, Spinach juice powder, L-Leucine. These complete the product’s ingredient list but are not active constituents.
L-5-MTHF Natural S-Isomer by Designs for Health Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in L-5-MTHF Natural S-Isomer. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for L-5-MTHF Natural S-Isomer, from the product label.
Designs for Health
See all Designs for Health products- Name
- Designs for Health, Inc.
- Street Address
- 980 South Street
- City
- Suffield
- State
- CT
- ZipCode
- 06078
- Web Address
- www.designsforhealth.com
L-5-MTHF Natural S-Isomer by Designs for Health: Common Questions
Does L-5-MTHF Natural S-Isomer by Designs for Health interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if L-5-MTHF Natural S-Isomer is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
Sources & How We Checked
L-5-MTHF Natural S-Isomer's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC