Folic acid can be taken at night. Folic acid only needs to be taken once a day, in the morning or in the evening, and the time of taking the medicine will not affect the effect of the medicine. A small number of women may experience nausea and vomiting after taking folic acid, which are adverse reactions to folic acid, and it is recommended to take it half an hour after meals in order to reduce such adverse reactions. Women usually take folic acid during pregnancy preparation and early pregnancy. Folic acid is very important for the development of the baby’s nervous system, promoting the development of the nervous system and preventing neural tube malformations. In addition, it is also useful for the formation of hemoglobin, which is a very important nutrient. There are many foods that are rich in folic acid, such as various green leafy vegetables and animal liver, etc. In addition to taking folic acid tablets, you can also add more of these foods to your diet.