Benefits of Vitamin B12 Injections at Gruene House Med Spa How Often Should You Get B12 Injections? A Realistic Schedule ELLEMES Medical Spa Gym goers spending monthly on vitamin B and C injections Have a f*cking word with yourself. Both are water soluble, so don't stick around for long in your system (12 14hrs) hence Are Vitamin B12 Shots Right for You? Main benefits of B12 injections 1) Increased energy & reduced fatigue B12 helps convert food into usable energy Deficiency often causes tiredness, weakness, and low stamina 2) Healthy red blood cells Prevents