Folic acid and vitamin B12 can be taken together and belong to the same class of medicine. They can effectively increase the vitamin content in the human body, promote the elasticity of human blood vessels and ensure that the blood viscosity is in the normal range. It can also promote the digestion and absorption of various nutrients in the gastrointestinal tract of the human body. Taking folic acid during pregnancy can effectively prevent fetal malformations, while taking vitamin B12 can increase the vitamin amino acid content in the body, ensure the endocrine balance of the human body, and fully maintain the nutrient needs of the human body. During pregnancy, it can promote the nutrient absorption of the fetus, and also prevent maternal malnutrition caused by excessive digestion of various nutrients due to pregnancy, and prevent fractures caused by osteoporosis, and vitamin B12 can promote the absorption rate of folic acid in the human body, and these two drugs can be taken together.