can you overdose on b12 injections of Should we be concerned about getting too much vitamin B12? Consequences of Excess or Deficiency – Vitamin B12 Side Effects: Risks

Appetite and fat storage

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Nothing here is medical advice or a dosing recommendation.

Also searched were the Cochrane database and the National Guideline Clearinghouse database

Lipoatrophy is the opposite: fat tissue breakdown creating divots or depressions

Maintain a Balanced Diet A balanced diet rich in B12-rich foods can help maintain optimal B12 levels