Nutraxin Vitals Folic Acid 400mcg 100 Tabs is a dietary supplement that provides 400 mcg of folic acid per tablet. Folic acid is a B vitamin that is essential for many bodily functions. Nutraxin Folic Acid; It contains folic acid in the vitamin B family. Folic acid is also known as folate. "Taking supplemental folic acid increases the mother's folate level. Low folate levels are a risk factor for neural tube defects in fetal development