Methylfolate
Also: 5-MTHF, L-5-MTHF
The biologically active folate form used directly in one-carbon metabolism and many methylation reactions.
Definition of “Methylfolate”
Methylfolate usually refers to 5-MTHF, the active folate form the body can use directly in one-carbon metabolism. It is the form that shows up most often when supplement labels want to distinguish themselves from basic folic acid products.
The term matters because it is one of the most common entry points into methylation shopping. People may not know the entire pathway, but they quickly learn that form choice matters. That is what makes methylfolate both useful and heavily marketed.
“Methylfolate” In Practice
A label that highlights methylfolate is usually trying to signal an active folate form rather than generic folic acid.
Worth Knowing About “Methylfolate”
Methylfolate is a specific form question, not the whole methylation conversation. It tells you something important about the ingredient, but not everything about dose, fit, or whether the product solves the right problem.