It is useful to take folic acid when you are already pregnant. Folic acid is mainly a drug used to prevent fetal neural tube abnormalities, and it is possible to take the drug within the first 3 months of pregnancy. Women who are planning to get pregnant need to start taking folic acid supplements from 3 months before pregnancy to avoid various conditions such as fetal neural tube abnormalities, premature birth and miscarriage. Also taking folic acid properly is good for the pregnant woman’s body and replenishes the vitamin that her body lacks. Folic acid is a B vitamin-like drug that is capable of participating in various metabolic pathways in the body, and a deficiency of folic acid in the body can lead to neural tube abnormalities. Therefore, it is necessary to take folic acid supplements during the 3 months of pregnancy preparation and the first 3 months of pregnancy, but be careful not to consume too much folic acid as it may cause side effects. It is important to follow the doctor’s instructions on the use of medication and avoid overdose, which may affect the growth and development of the fetus.