ideal dosage of b12 injection Shots at Home: How, Where & How Often to Inject Yourself Vitamin B12 Injection: Uses, Benefits,

Your doctor will decide how often you need B12 injections based on your needs

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Common examples include fatigue or low energy with normal blood results, brain fog or reduced concentration without confirmed vitamin B12 deficiency, stress-related exhaustion or burnout, increased metabolic demand such as during illness recovery, high workload, or intense training, restrictive or inconsistent dietary intake, or suspected poor oral absorption despite normal serum levels

Combined nicotinamide N-methyltransferase inhibition and reduced-calorie diet normalizes body composition and enhances metabolic benefits in obese mice.[J]