AboutMethylfolate is Vitamin B9 in its purest form. Your body needs it and can use this form immediately. Here at Tespo Vitamins®, we use a premium form of this vitamin, L-Methylfolate Metafolin®. It is well absorbed and its bioavailability is not affected by those with the MTHFR gene, so it can efficiently convert traditional folic acid into the form needed to deliver a wide range of health benefits. Metafolin® is a registered trademark of Merck KGaA. Folic Acid plays a key role in proper growth and optimal functioning of bone marrow, cell division, and lowering the risk of many health conditions, including cardiovascular disease.