No extra energy yet but my appetite is curved
The short answer
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Cyanocobalamin is an active, easily absorbable form of B12 that corrects deficiencies and supports vital biological functions: nerve health, red blood cell formation, cell metabolism, and DNA synthesis
While the daily dose was sufficient to maintain serum B12 levels above 156 pmol/l in almost all subjects, the weekly dose was only able to do so in 74% of subjects (Sanz-Cuesta, 2020)
These are the benefits of vitamin B12 injections