Folic acid tablets pregnant women are generally recommended to eat to the end of the second trimester of pregnancy, the specific medication should follow the doctor’s instructions and personalized development. Folic acid tablets belong to the water-soluble B vitamins, is the preparation of pregnant women need to take a common drug, mainly to prevent the lack of folic acid in pregnancy and make the fetus congenital neural tube malformation, in addition to the prevention of gestation, breastfeeding women due to the lack of folic acid, macrocytic anemia and so on. The drug is generally recommended to be taken orally by women of childbearing age from the time they plan to become pregnant, and is recommended to be taken until the third trimester of pregnancy for pregnant women without risk factors. Women with a history of neural tube defects, one spouse with neural tube defects, or a man with a history of neural tube defects are recommended to take 4mg of folic acid daily until 4 months of gestation, starting at least 1 month before a potential pregnancy or conception. Women with congenital hydrocephalus, congenital heart disease, cleft lip and palate, limb defects, urinary tract defects, or a family history of these defects, or a history of births with neural tube defects in the first or second-degree of consanguinity, women with diabetes mellitus, obesity, or epilepsy, and women with gastrointestinal malabsorption are advised to receive a supplemental dose of 0.8-1 mg folic acid per day starting at the beginning of a probable pregnancy or at least 3 months prior to the pregnancy and continuing for the first 3 months of the pregnancy. Note that folic acid tablets should be contraindicated in people who are allergic to this product, and specific medication should be administered under the guidance of a specialist.