Folic acid tablets are anti-anemia medicines, mainly used for the treatment of megaloblastic anemia. The main ingredient of folic acid tablets is folic acid. Folic acid is a kind of water-soluble vitamin, which is an essential nutrient for the growth of human body, when its deficiency will cause various diseases. Folic acid tablets are used for the treatment of megaloblastic anemia caused by folic acid deficiency, the prevention of fetal neural tube malformation in pregnant and lactating women and chronic hemolytic anemia caused by folic acid deficiency in the body. The drug has fewer adverse reactions, long-term use of the drug may have side effects such as gastrointestinal discomfort. It should be noted that the drug is contraindicated in people who are allergic to folic acid. The drug needs to be used under the guidance of a doctor, do not blindly use the drug on your own, so as not to cause adverse consequences.