"Methyl folate" is a type of vitamin B9 that helps our bodies make new cells and DNA. It is a natural form of folate that our bodies can use more easily compared to synthetic forms. Full definition
You mentioned adverse reactions when supplementing with methyl folate and methyl b12. (mommypotamus.com)
Rather than taking folic acid supplements, women with this gene mutation instead need to take the active form of folate, known as methyl folate or 5 - MTHF. (smartfertilitychoices.com)
Look for Folic Acid in the form of methyl folate and folinic acid. (akashacenter.com)