who can administer a b12 injection How to self-inject intramuscular vitamin - Overview Best Vitamin B12 Injection Sites:
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Note: This blog post is for informational purposes only and should not replace professional medical advice

The short answer is: it depends on where you go

Cyanocobalamin should not be used in patients who are pregnant and in patients with early hereditary optic nerve atrophy and cyanocobalamin hypersensitivity
This selectivity means fewer unwanted side effects and a cleaner hormonal profile during use
