Can vitamin B12 be taken long term?

Vitamin B12 is an essential element for the human body. Lack of vitamin B12 is also harmful to your health. However, you should be careful not to use it for a long time, because it may cause allergic reactions, anaphylactic shock, and skin itching.

⒈Can cause allergic reactions or even anaphylactic shock.

⒉ Promote the growth of malignant tumors.

⒊ It becomes ineffective when exposed to vitamin C or heavy metal salts.

⒋ It may occasionally cause rash, itching, diarrhea and asthma.

⒌ Since B12 is mainly used to treat pernicious anemia; it is used in combination with folic acid to treat other megaloblastic anemias, anemia caused by antifolate drugs and steatorrhea; it is also used to treat certain nervous system diseases such as neuritis, neurasthenia, liver diseases such as cirrhosis, hepatitis, and blood system diseases such as leukopenia, aplastic anemia, etc.

⒍Therefore, excessive injection of vitamin B12 may also cause the following side effects: allergic reactions such as asthma, urticaria, eczema, facial edema, chills, etc., and may also cause nervous excitement, precordial pain and palpitations. Excessive intake of vitamin B12 can also lead to folic acid deficiency.