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Pernicious anemia, one of the causes of vitamin B12 deficiency, is an autoimmune condition that prevents your body from absorbing vitamin B12
Vegans and vegetarians, in particular, benefit from B12 injections because the B12 vitamin is found almost exclusively in animal products
Learn How An easy to follow step-by-step for intramuscular injections can be found on our How to Perform an Intramuscular Injection of Vitamin B12 page
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