5-MTHF (Quatrefolic)

Ingredient common name

5-MTHF; Active folate; Vitamin B9

Supports women’s reproductive health*
Promotes heart and blood vessel health*
Enhances mood* 


Patented ingredient name



Gnosis USA, Inc.

Dietary sources

Spinach, collard greens, kale, Swiss chard, asparagus, broccoli, Brussels sprouts, avocado, papaya, oranges, grapefruit, strawberries, lentils, peas/split peas, and beans (pinto, kidney, black, etc.)

Why our form
  • Stabilized by glucosamine (not derived from shellfish)
  • This form passes the gastric barrier and is absorbed mainly in the small intestine by a carrier-mediated mechanism, which ensures higher folate uptake
  • Created by Gnosis, the technology leader in active folate supplementation
  • Contains only the active isomer form of 5-MTHF
What we test for
  • Identity (HPLC)
  • Specific rotation
  • Heavy metals
  • Microbes

Contained In

Clinical References