correct size needle for b12 injection in butt subcutaneous injections, using shorter needles (4-5mm) is the safest choice to ensure medication stays the fatty layer and avoids muscle injury. A 4mm is ideal, minimizing pain while keeping What needle size is best
Description
doi: 10.1093/ajcn/44.5.614

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You dont even need to go to the gym to get these amount of exercise

Use the upper outer quadrant only, not the area you sit on
Comparing Your Options For B12 Shots To help you decide which route is best for you, heres a quick comparison of the main ways to get B12 injections in the UK and Ireland