How many months should folic acid be taken during pregnancy?
Women planning pregnancy should begin taking a daily supplement of 400 µg folic acid starting three months before conception and continue throughout pregnancy. Folic acid supplementation before conception and during early pregnancy aims to prevent neural tube defects in the fetus.Pregnant women are advised to maintain balanced nutrition and correct deficiencies in iron and calcium. They should regularly consume foods naturally rich in folic acid, such as animal liver, eggs, legumes, yeast, dark green leafy vegetables, fruits, and nuts.
A daily intake of 400 g of assorted vegetables—including at least half (i.e., ≥200 g) of fresh dark green leafy vegetables—provides approximately 200 µg of dietary folate. Combined with a 400 µg folic acid supplement, this achieves the recommended total daily intake of 600 µg folic acid during pregnancy. Additionally, pregnant women should ensure adequate intake of multiple vitamins and trace elements.Excessive folic acid supplementation may interfere with zinc metabolism; therefore, zinc supplementation should accompany folic acid intake during pregnancy, and folic acid doses must not exceed recommended levels. Some pregnant women take folic acid supplements for over one year or use multiple prenatal health products—such cases warrant careful monitoring for potential folic acid excess.