are b12 injections sore Best Vitamin Injection Sites: Where to Inject B12 · PA Relief Do B12 Injections Hurt? Painful
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[DOI] [PMC free article] [PubMed] [Google Scholar] 139.Butler PC, Chou J, Carter WB, et al

Martin Arias LH, et al

Pinch the skin to create a fold, insert the needle, inject slowly, wait 5-10 seconds before withdrawing

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