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WARNINGS: Patients with early Leber's disease (hereditary optic nerve atrophy) who were treated with cyanocobalamin suffered severe and swift optic atrophy
Some individuals may experience mild injection-site reactions (e.g., redness, swelling) or occasional headaches
Oral supplements have 2.4 to 2.6 mcg of vitamin B12
Its targeted mechanism makes it relevant in studies focused on weight management and metabolic health
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