Women can also take folic acid during their period, because the purpose of taking folic acid before pregnancy is to maintain a certain level of folic acid in a woman’s body to effectively prevent the occurrence of fetal malformations. It takes four weeks for a woman to take folic acid before the folic acid deficiency in her body is corrected. In early pregnancy, which is a sensitive period for the formation of the fetal neural tube, sufficient folic acid is needed to meet the needs of the developing nervous system. Folic acid is stored in green leafy vegetables, fruits and animal livers, so in addition to taking more folic acid, you should also eat green leafy vegetables and animal livers. Women taking folic acid during pregnancy preparation do not have to be affected by whether they have a period or not, but they also need to take folic acid orally during their period.