When is folic acid supplementation best?

Women should consume folate-rich animal livers, dark green vegetables, and legumes from the beginning of pregnancy, and recommend an additional 0.4- 0.8 mg of folic acid daily until the third month of pregnancy. For patients with neural tube defects, oral folic acid should be increased before pregnancy, generally up to 4mg, until the third month of pregnancy. If folic acid deficiency is present in early pregnancy, it may increase the risk of neural tube defects and premature delivery, so it is necessary to supplement folic acid in time.