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High doses of B12 may worsen the disease and cause irreversible damage to the optic nerve
Oral vitamin B12 absorption drops sharply at higher doses
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A degraded product may simply be less potent, with no visible sign
The frequency of vitamin B12 injections varies from patient to patient and depends on several key factorsincluding the underlying reason for supplementation, your bodys ability to absorb vitamin B12, and your individual dosage needs
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