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Laboratory interference: Persistent unexplained elevation may reflect macro-B12 (immunoglobulin-bound B12) or other assay interferences
Specific Dosage Guidelines Severe Deficiency : For patients with severe vitamin B12 deficiency, an initial dose of 1 mg (1000 g) of intramuscular hydroxocobalamin is commonly administered
Some users experience a plateau around weeks 10-12
B complex vitamins typically contain 50 mcg to 500 mcg of vitamin B12 along with other B vitamins such as folic acid (vitamin B9) and pyridoxine (vitamin B6)
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