Folic acid tablets can be taken during menstruation, but folic acid is a vitamin whose main component is vitamin B9. Folic acid is involved in the synthesis of hemoglobin and methyl compounds, and is effective in improving blood system problems or preventing neural tube abnormalities in the fetus during pregnancy. Most of the folic acid supplements are clinically administered to prevent fetal neural tube abnormalities, as the need for folic acid increases significantly after pregnancy, reaching more than four times the normal human body level, and needs to be improved by special folic acid tablet supplementation. The human body requires more than 0.4 mg of folic acid a day after pregnancy, and folic acid supplementation is required during pregnancy preparation and the first trimester of pregnancy, both during and after menstruation.