SOLGAR folic acid Metafolin 400 mcg 100 tablets

Matafolin is the dominant form of folates found in food. In relation to folic acid, metafolin exhibits optimum absorption, higher bioavailability and physiological activity. It is also the most effective form for people affected by the so-called MTHF polymorphism, which prevents the proper conversion of folic acid in the body.
Metafolin is the only folate that penetrates the blood-brain barrier. Chemically, metafolin is a stable calcium salt of L-5-methyltetra-hydrofolic acid, L-5-MTHF. Matafolin does not mask a possible deficiency of vitamin B12 in the diet. Even very large portions (above 1000 µg) per day are safe and do not involve the risk of accumulation of unmetabolized folic acid.