Folic acid tablets are generally recommended to be taken half an hour after a meal. Folic acid tablets also have some adverse effects, one of which is that they may cause gastrointestinal symptoms, such as nausea, vomiting, and appetite being affected. If taken before a meal, it may affect the appetite, so it is more appropriate to take it half an hour after a meal. The clinical groups that need folic acid supplementation are women during pregnancy preparation and women in early pregnancy, because the demand for folic acid in this group is relatively high, mainly to prevent neural tube malformation in babies by supplementing folic acid. In addition to taking folic acid tablets, you can also eat some green leafy vegetables and animal offal, which are also rich in folic acid.