ByDr. Brennan Commerford, D.C.·Last reviewed: July 2026
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Folate (Quatrefolic 6S-5-MTHF): verification pending

We’re confirming the science for this compound before we publish a form ranking. Our team reviews every ranked page against peer-reviewed absorption data — this one is still under review, so we are not showing a score yet.

Check back soon. Rankings are reviewed by Dr. Brennan Commerford, D.C.

References

  1. Comparative Analysis of Treatment With Folate Forms in Clinical Practice. PubMed
  2. Folate, folic acid and 5-methyltetrahydrofolate are not the same thing. PubMed
  3. [6S]5-methyltetrahydrofolate or folic acid supplementation and absorption and initial elimination of folate in young and middle-aged adults. PubMed

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.