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Doctor's Best

Doctor's Best, Fully Active Folate, 400mcg, 90 veggie caps

$11.24 $103.50 Free U.S. Shipping over $35Free Shipping
Product Code: DB0262
UPC Code: 753950002623

Suitable for vegetarians

  • Science-based nutrition
  • Dietary supplement
  • Helps correct inherited and lifestyle-related folate deficiencies
  • Supports health mood, memory, circulation and well-being

Functional deficiencies of the essential nutrient folate (folic acid) are common, and can impair key life processes including gene-level regulation, cell growth patterns and tissue repair, from before birth through old age. Best Fully Active Folate provides MTHF (5-methyltetrahydrofolate), the folate form most directly required for DNA regulation and other fundamental metabolic processes. Quatrefolic is the most bioactive MTHF available anywhere.


90 veggie caps


Best Fully Active Folate supplies the B vitamin folate as [6S]-5-methyltetrahydrofolic acid (MTHF). This is the body's most fully active folate nutrient, its most important folate reservoir, and the only folate form biochemically identical to the MTHF present in the body.1,2This supplement features Quatrefolic, human-identical MTHF, as a glucosamine salt. This next-generation supplement guarantees the intricate MTHF structure with improved stability over the earlier-generation calcium salt of MTHF. Named after the Latin word for leaf ("folium"), folate is the collective term for a family of pteroylglutamate nutrients that are most concentrated in leafy vegetables.3The body cannot make folate on its own and must obtain it from foods or dietary supplements, with possible small contributions from intestinal bacteria. Foods supply only limited amounts of folates and these are generally not well absorbed. Of the folates that are absorbed, almost all are converted to MTHF.4The Quatrefolic brand of MTHF in this supplement is the most stable and best-absorbed form available anywhere.

About Doctor's Best

Founded in 1990 by supplement industry veteran Ken Halvorsrude and a wholistic physician, San Clemente-based Doctor's Best, Inc. manufactures and distributes dietary supplements throughout the US and overseas. Doctor's Best is known for high-quality products that are based on sound research in the field of nutritional science.


Do not use if pregnant or nursing. Keep out of reach of children. Please consult your health care provider if currently under care or treatment. Do not exceed recommended serving. See product packaging for additional safety information.


Individual results may vary. This product is not intended to diagnose, treat, cure or prevent any disease. The statements on this website and all affiliates have not been evaluated by the FDA. Advice on treatment or care of an individual patient should be obtained through consultation with a trained health care practitioner.

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