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[9] Visual disturbances have been reported in patients with Leber hereditary optic neuropathy, and rapid B12 administration may precipitate optic nerve atrophy in this genetically predisposed population, mandating extreme caution or alternative therapy
A confident, qualified provider will answer these questions readily
Furthermore, the risk of an allergic reaction is typically lower with oral supplements than with injections
Headache: Some people may experience headaches
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