Supports normal healthy mood, cardio and nerve function. L-Methylfolate is important for normal production of serotonin, norepinephrine and dopamine, and is essential for converting homocysteine to methionine. Based on scientific research, our 5-MTHF is a more active and bioavailable form of folate and is the only form of folate to cross the blood-brain-barrier. Use it to help: Support: normal mood. Support: cardio and nerve function. Support: biosynthesis of neurotransmitters.