Tuberculin syringe vs insulin syringe KMED KANGYI MEDICAL B12 Injections for Weight Loss Does it Even Work? Infusion For Health Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How to self administer subcutaneous B12 injection. 1. Withdraw proper dosage from vial into an insulin syringe 2. Clean site of injection (abdomen or other proper site) 3. Pinch the skin where B12 Injection sites + How to use B12 Shots Safely