How to take vitamin B12, what should pay attention to?

Vitamin B12 needs to be converted into methylcobalamin and coenzyme B12 before it is active. When it is lacking, it can lead to DNA synthesis obstacles and affect the maturity of red blood cells, causing megaloblastic anemia, and can also affect the normal function of the nervous system, and even lead to nervous system lesions.

Oral vitamin B12 is mainly used for vitamin B12 deficiency caused by malnutrition and the intestinal absorption function is normal. It is 0.5-1.5 mg once, 3 times a day. It is recommended to take it after meals to absorb it more fully. , and sometimes even bring adverse reactions.

Regular intake of vitamin B12 should pay attention to:

1. For patients with megaloblastic anemia, vitamin B12 needs to be supplemented when supplementing folic acid, otherwise the abnormality of the nervous system will not improve.

2. Various anemias, malnutrition, viral hepatitis, multiple sclerosis, trigeminal neuralgia, and skin, and mental disorders unrelated to the metabolism of vitamin B12 are ineffective and should not be abused.

3. Excessive dosage is common in clinical practice, which not only wastes resources but is more prone to adverse reactions.