The correct way to take folic acid tablets for pregnancy is 0.4mg once a day, and pregnant women need to take the medication orally under the guidance of a doctor. Folic acid tablets can be used for the prevention of fetal congenital neural tube malformation, women of childbearing age from the time of planning pregnancy to the end of the second trimester of pregnancy, the oral dose of 0.4mg once a day once a day, the specifics of the need to comply with medical advice. Folic acid tablets have fewer adverse reactions, if you take this drug for a long time, nausea, abdominal distension and other gastrointestinal symptoms, if you take a large amount of folic acid, may lead to yellow urine. For the folic acid component of the allergy should be contraindicated use of this drug, pregnant women need to strictly follow the doctor’s instructions to take medication, do not take medication without authorization, in order to avoid damage to health, is not conducive to the growth and development of the fetus. Pregnant women need to follow the doctor’s instructions during pregnancy for regular checkups, once the body abnormalities occur, you need to go to the regular hospital, so as to clarify the cause of the disease.