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How does an injection differ from just taking a tablet

Appetite and Nausea : Interestingly, a severe vitamin B12 deficiency can sometimes lead to a loss of appetite and even nausea

This ensures the shots work well and are safe

Like most treatments, vitamin B12 injections carry warnings that patients should be aware of, including: Hereditary Optic Nerve Atrophy: People with early Lebers disease (a hereditary form of optic nerve atrophy) should not receive cyanocobalamin injections, as rapid and severe vision loss has occurred

Vitamin B-12 is a key factor in DNA synthesis during cell division and therefore is especially important for rapidly multiplying cells, such as blood cells