Folate 1000Pure Encapsulations Folate 1000 provides the most bioavailable form of folate in convenient capsule form. Each capsule contains 1,000 mcg of Metafolin (L 5 MTHF), the naturally occurring form of folate that requires no enzymatic conversion. This supplement contains L 5 methyltetrahydrofolate, the active form of folate that supports cellular division, cardiovascular health, and healthy methylation processes. The Metafolin form is particularly