does b12 injection hurt How Often Should You Have Injections? Do B12 Injections Hurt? Painful

[DOI] [PubMed] [Google Scholar] 72.Aoyama T., Hara K., Maezawa Y., Kazama K., Hashimoto I., Sawazaki S., Komori K., Tamagawa H., Tamagawa A., Kano K., et al

Injection: A small, quick injection is given in the muscle, typically in the upper arm or thigh

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Clinical guidance for intramuscular injections points to a 22 to 25 gauge needle, given at a 90-degree angle, with the length chosen so it reaches muscle without going too deep

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