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Many people rely on both methods, using injections to see quick results and oral supplements to maintain balanced levels over time
Journal of Clinical Oncology , 35 (30), 34403448
Follow-Up : Regular follow-up appointments may be necessary to monitor your Vitamin B12 levels and adjust the frequency of injections as needed
Sevastre-Berghian AC, Toma VA, Sevastre B, et al
Considering the number of patients and the few reported cases, you can see how rare these reactions really are
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