Vitamin B12 is mainly used for

The treatment of pernicious anemia, also used in combination with folic acid for the treatment of various megaloblastic anemia, anemia caused by antifolic acid drugs and steatorrhea.

Neurological disorders (such as neuritis, neural atrophy, etc.).

Liver diseases (hepatitis, cirrhosis, etc.), leukopenia, aplastic anemia and so on. Adverse reactions are mainly allergies, and can promote tumor growth in patients with malignant tumors.

Opinion: It is recommended to use it regularly under the guidance of the visiting doctor to avoid long-term abuse.