Needle and Syringe Combos Choosing wisely: needle length and gauge considerations for intramuscular and subcutaneous injections Vitamin B12 Injections: Boost Your Energy and Wellbeing with Skinox Skinox Aesthetics What Size Needle Do You Use for A B12 Shot TikTok 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