Start 0.4 mg of folic acid daily when planning pregnancy and continue through the first three months
Daily folic acid around conception reduces neural tube defects, such as anencephaly and spina bifida, by roughly 70% in the pooled research. Among people with a previous affected pregnancy, recurrence risk was about one-third of that without supplementation. Discuss your dose with a clinician if you have a previous affected pregnancy or other risk factors.