Folic acid required in first trimester of pregnancy in a woman with a history of NTD is:

Ans. C. 4mga. More than half of NTDs could be prevented with daily intake of 400IgM of folic acid throughout the periconceptional period.b. A woman with a prior pregnancy complicated by a neural tube defect can reduce the 23% recurrence risk by more than 70% if she takes 4mg (4000ug) of folic acid for the month before conception and for the first trimester of pregnancy.