b12 methylcobalamin injection (Vitamin B12) Compounded Cyanocobalamin (Vitamin B12) Injection

History [edit] Descriptions of deficiency effects [edit] Between 1849 and 1887, Thomas Addison described a case of pernicious anemia, William Osler and William Gardner first described a case of neuropathy, Hayem described large red cells in the peripheral blood in this condition, which he called "giant blood corpuscles" (now called macrocytes), Paul Ehrlich identified megaloblasts in the bone marrow, and Ludwig Lichtheim described a case of myelopathy

You're currently receiving medication or treatments that affect bone marrow

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Oral supplements are a fine choice for many people, particularly for maintenance or for otherwise healthy vegans

Poor concentration and extreme mood swings are other symptoms they might display