How to Give a B12 Injection: Step By Step Instructions My Acupuncture sessions generally end with a B12 Shot in Acupuncture Points. It makes the point active longer since there is pressure on it from the B12 while it absorbs. Injectable B12 is absorbed B12 vitamin Store Affordable high quality Vitamin B12 Injectables in Ampules and Vials! Vitamin B 12 1000 Injection (VetOne), 100 mL FBN At Home Vitamin B12 4 Week Injection Package MUST BE A FLORIDA RESID CardioMender, MD