It usually doesn’t matter if you haven’t taken your folic acid for a day, try not to miss your medication for a long period of time. Folic acid is a B vitamin, the treatment of various causes of folic acid deficiency and megaloblastic anemia caused by folic acid deficiency, for pre-pregnancy and the first three months of pregnancy prophylactic treatment to reduce the risk of fetal neural tube defects. It does not matter if you do not take folic acid for a day once in a while, don’t forget to take the medication afterward, and take the medication as prescribed by your doctor in order to have a good therapeutic effect. Folic acid is contraindicated in people who are allergic to folic acid drugs, and megaloblastic anemia caused by vitamin B12 deficiency should be treated with a combination of drugs. Allergic reactions such as swelling of the face, lips, tongue, throat and difficulty in breathing may occur after using the medication. Schedule your medication and try not to forget to take it during the medication.