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Oral B12 supplementation generally takes longer to produce noticeable effects than intramuscular injections, with patients typically experiencing improvements within 24 weeks
Bacteriostatic Water 3.0 mL per 5 mg vial for reconstitution
Children below ten years should not inject themselves
Warnings Patients who have early Leber's disease (hereditary optic nerve atrophy) have been found to suffer severe and swift optic atrophy when treated with vitamin B12
The nasal spray is typically reserved for maintaining B12 levels after injections bring particularly low levels back to normal (5)
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