Generally, the elderly can take folic acid tablets for pregnant women, and this drug can also treat megaloblastic anemia caused by folic acid deficiency and folic acid deficiency caused by chronic hemolytic anemia. Folic acid tablets belong to the western medicine, belongs to a kind of water-soluble B vitamins, is the growth of human cells, reproduction of the necessary substances, therefore, when the elderly exist due to the lack of folic acid caused by megaloblastic anemia, or suffering from chronic hemolytic anemia caused by the lack of folic acid, can be taken under the guidance of the doctor folic acid tablets. However, some patients may experience adverse reactions such as fear of food, nausea and bloating after long-term use of the drug, and if a large number of folic acid tablets are taken, it is easy to make the urine turn yellow. In addition, if the elderly lack of folic acid, usually need to adjust the diet structure, can eat more kiwi, carrots, spinach, strawberries and other foods. All in all, the elderly need to go to the hospital when they are not feeling well, follow the doctor’s instructions to use medication, do not take folic acid tablets on their own.