Folic acid, if used for pregnancy, is usually started in the first trimester and taken until the second trimester. However, if abnormal folic acid metabolism is detected in the post-pregnancy checkup, it is necessary to extend the time of taking folic acid for a longer period of time.
Some data show that early pregnancy folic acid deficiency, the incidence of fetal neural tube malformations increased, such as spina bifida, hydrocephalus and so on. In order to increase the level of folic acid in the pregnant woman’s body, so it is necessary to start taking it before pregnancy.
Fetal neural tube development is generally in early pregnancy, to the third trimester has developed, so supplemental folic acid generally to the third trimester can be.
There are a small number of women in pregnancy will appear folic acid metabolism is abnormal, so it is necessary to appropriately extend the time to take folic acid,.
In addition, if folic acid deficiency leads to anemia, you need to wait for the clinical symptoms to improve, blood tests are not abnormal before you can stop taking the drug.