Hi dear and thanks for your query. Yes the dosage of folic acid for the pregnant women, who her pregnancy is the first and havn t done any abort is 400 mikro gram. For the women who have already had an NTD-affected pregnancy should consume 0.4 mg (400 micrograms) of folic acid every day when not planning to become pregnant. When these women are planning to become pregnant,the guideline called for consumption of 4 milligrams (4000 micrograms) of folic acid daily beginning one month before they start trying to get pregnant and continuing through the first three months of pregnancy. So you have to take 400 mikro gr per day until you become 12 weeks pregnant. All the best