It is also gluten-free, has no color added, no artificial flavors, and no preservatives. Thorne 5-MTHF 1mg is a reliable and effective B9 supplement that supports healthy methylation ...

May cause digestive discomfort in some individuals. We were impressed with the Thorne 5-MTHF 5mg Supplement’s ability to support healthy methylation, cardiovascular health, and nerve function.

Methylfolate (also called L-5-MTHF, 5-methyl-folate, L-methylfolate, or 5-MTHF) and folinic acid are in some folate supplements. These are the active forms of folate found naturally in foods.

Margeson says you’ll see vitamin A listed as beta-carotene; iron as a citrate or other ferrous fumarate, sulfate, or gluconate; and folate as L-5-methyltetrahydrofolate or 5 MTHF. “If these ...