who can administer a b12 injection How to self-inject intramuscular vitamin - Overview How To Self-Inject B12
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Nerve problems may include numbness, pins and needles, vision changes and unsteadiness
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Cyanocobalamin should not be used in patients who are pregnant and in patients with early hereditary optic nerve atrophy and cyanocobalamin hypersensitivity
Waterson MJ, et al
