How to Self Inject Vitamin B12 at Home The Sanctuary Wellness Institute Vitamin B 12 1000mcg Injection for Pets VetRxDirect B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics 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