How to Give a B12 Injection: Step By Step Instructions 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 How Needle Size Affects Injection Pain What are the Benefits of B12 Injections? VSM Pharmacy
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what size needle should be used for b12 injections Ivy Grove Surgery : Self-administration of B12 injection