where should vitamin b12 injections be given Best Injection Sites: to Inject B12 · PA Relief Best Vitamin B12 Injection Sites

B12 shots are typically administered in the upper outer quadrant of the gluteal muscle (the gluteus medius)

Most people get 1000 mcg (1 mg) of B12 once or twice a week

A systematic review of 35 prospective cohort studies assessing the association between vitamin B 12 status and cognitive deterioration in older individuals with or without dementia at baseline did not support a relationship between serum vitamin B 12 concentrations and cognitive decline, dementia, or Alzheimers disease (79)

And the metabolic endpoint being measured

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