Do pregnant women have side effects when they eat folic acid?

Folic acid has a significant effect on preventing fetal neurovascular malformations. Therefore, folic acid supplementation is needed three months before pregnancy and three months after pregnancy. Generally, folic acid is taken once a day and has no side effects. If it is taken excessively, it may cause excessive folic acid in the body and affect the absorption of zinc. Therefore, it shows zinc deficiency. Zinc deficiency during pregnancy will cause fetal growth retardation. Therefore, excessive folic acid intake is not advocated. After three months of pregnancy, If the folic acid level reaches the standard during the pregnancy test, no further supplementation is needed.