One dietary folate equivalent is equal to 1mg food folate, which is equal to 0.6mg folic acid derived from supplements and fortified foods taken with meals.
14
Women who have had an infant with a
neural tube defect should consult with
their health care provider regarding
the recommendation to take 4,000 mg
folic acid daily before and throughout
the first trimester of pregnancy.
22
An
association between the lack of periconceptual use of vitamins or supplements containing folic acid with an
excess risk for birth defects due to diabetes mellitus
23
highlights ongoing
research.