Does size matter? Historically, a bigger needle gauge was considered better to prevent damage to red blood cells. However, our recent guidelines recommend using smaller gauge needles (2325 G) for all Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium How to Give a B12 Injection: Step By Step Instructions
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what gauge for b12 injections Needle Size for B12 Injection: 5 Must-Know Tips