1. Mainly reflected in promoting the growth, development and maturity of red blood cells, and maintaining the health of the human nervous system. For sugar, fat and protein, vitamin B12 can be used to participate in the metabolic process.

2. Vitamin B12 can also stabilize mood, focus, enhance memory, etc. The human body's demand for vitamin B12 is very small, but once it is deficient, serious problems will occur. Common ones include abnormal tongue sensation, migraines, irregular menstruation in women, oral ulcers, and malignant anemia. Vitamin B12 can be taken regularly in daily life to correct the symptoms of oral ulcers.