You can continue to take folic acid if your period is delayed. Folic acid is a nutrient, not a hormone, and does not affect menstruation and will not delay it. Folic acid is a B water-soluble vitamin, is essential for cell growth and reproduction, and is not a hormone, taking folic acid will not delay menstruation. Women’s menstruation is regulated by the hypothalamus-pituitary-ovary axis in the body, and there are many factors affecting the delay of menstruation, such as pregnancy, endocrine disorders, and mental stress, etc., all of which can lead to the delay of menstruation. Folic acid needs to be taken under the guidance of a doctor. Avoid drinking alcohol during the medication period, and an overdose of folic acid may cause allergic reactions such as swelling of the face, lips, tongue or throat, and difficulty in breathing. If a woman experiences delayed menstruation while taking folic acid, it is recommended that she go to the hospital for a checkup to clarify the cause of delayed menstruation before treatment.