You can take folic acid all the way through your pregnancy, but it is recommended that you choose the right dosage of folic acid for each situation. Everyone feels differently about folic acid. Some people taking folic acid will cause loss of appetite and depression, while some do not feel anything. Super high-risk people can take 5mg of oral folic acid per day, and the general population can take 0.4mg of oral folic acid per day. usually, it is recommended to take folic acid supplementation in the first 3 months of pregnancy and the second 3 months of pregnancy according to the doctor’s prescription, in order to provide the nutrients necessary for the development of the fetal central nervous system and prevent fetal cerebral neural tube malformations; it also promotes the production of red blood cells and prevents anemia in pregnancy. However, if the pregnant woman is diagnosed with folic acid gene TT type, suggesting that the enzyme activity of folic acid is relatively low and the absorption of folic acid is particularly poor, she can take or increase the dosage of orally or orally active folic acid under the guidance of the doctor during the whole pregnancy, so as not to cause folic acid deficiency to appear in the development of the fetus deformities, congenital heart disease, anencephaly, or cleft lip and other diseases.