Men take folic acid tablets have the treatment of folic acid deficiency megaloblastic anemia, auxiliary treatment of some hypertension, prevention of Alzheimer’s disease and other roles, the specific use of medication should be in accordance with the doctor’s instructions. 1. Men (and women) can take folic acid tablets to treat megaloblastic anemia caused by folic acid deficiency, and note that megaloblastic anemia caused by vitamin B₁₂ deficiency cannot be supplemented with folic acid alone, and vitamin B₁₂ should be added. 2. Folic acid is related to the metabolism of homocysteine, and male (and female) patients with increased homocysteine hypertension can supplement small doses of folic acid to facilitate the control of hypertension. 3. Elderly men (and women) can supplement folic acid appropriately to nourish the nerves and prevent the occurrence of Alzheimer’s disease. Folic acid deficiency should be clearly identified before use of the drug, allergic reactions may occur after use of the drug, long-term use of the drug may be fear of food, nausea, abdominal distension and other adverse reactions, usually should also eat more fresh vegetables and appropriate exercise to supplement. Specific drugs should be directed by a specialist.