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Tirone, P.D

Weight regain after discontinuation occurs if caloric intake increases back to pre-diet levels, which is a dietary adherence issue, not a metabolic rebound from stopping the injections

Cochrane Database Syst Rev 2018

Why are B12 injections beneficial

[2] [16] Dietary deficiency without neurological features: Initial loading doses followed by maintenance therapy, with consideration of oral supplementation in appropriate cases