b12 injections do they work painless The Truth About Injections: Benefits, Cost & How Vitamin B12 Deficiency B12 Injections: Who Should Get

IGF-1 and growth hormone receptor activation controls confirming that AOD-9604 does not engage the classical hGH receptor or elevate IGF-1, distinguishing its mechanism from full-length growth hormone in cell-based reporter systems

Mikhailova TL et al

Thinning skin, vasculitis, purpuric dermatosis, platelet deficiency, liver disease, vitamin K deficiency, vitamin C deficiency, moving your body during the injection, or dehydration may also cause bruising

[2] Adherence to the prescribed treatment regimen is essential for optimal outcomes

NIH also notes that B12 does not provide energy or endurance benefits in people who already get enough B12 from their diet