what effects do vitamin b12 injections have in healthy athletes Supplementation Sports: A Decade of Evidence-Based Insights B12 Injection Benefits: Energy, Mood,
Description
Its common to start treatment for a significant vitamin B12 deficiency with weekly intramuscular shots (1000 micrograms of vitamin B12)

Accessed April 30, 2021

This might include an initial blood test to confirm your B12 status

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