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Description
You might have heard about vitamin B12 injections as a potential solution

Applications in Research: Observations from preclinical and clinical literature

Possible Side Effects Injection-site reactions: Mild redness, tenderness or transient blue discolouration at the site can occur

Research Highlights Metabolic Regulation and Anti-Obesity Effects: Potent inhibition of nicotinamide N-methyltransferase (NNMT) increases cellular NAD and S-adenosylmethionine (SAM) levels, enhances polyamine flux, boosts energy expenditure, and suppresses lipogenesis

This is perfectly normal
