wheres the best place to inject b12 spot for injection best b12 shot How to Inject Vitamin B12 Injecting B12 - Enhance Me
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The vitamin is injected deep into the muscle, typically the deltoid (upper arm), gluteus (buttocks), or vastus lateralis (thigh)

Because their cells can not metabolize homocysteine to methionine at a normal rate
As we age, we produce less of this stomach hydrochloric acid, meaning older adults may be at risk of a B12 deficiency

[Google Scholar] Tandon R., Thacker J., Pandya U., Patel M., Tandon K