Metafolin® ((6S)-5-methyltetrahydrofolic acid, calcium salt or L-methylfolate) is the pure stable crystalline form of the naturally-occurring predominant form of folate. This type of water-soluble B-vitamin plays a key role in central metabolic pathways, e.g., cell division and repair.
Developed and produced by Merck, Metafolin® is a proprietary ingredient directly usable by the human organism, involved in lowering homocysteine blood levels, and the only form of folate able to cross the blood-brain barrier. In addition, Metafolin® does not mask a vitamin B12-deficiency and presents no risk of an accumulation of unmodified folic acid in the body.
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