Not all shots are the same here's a guide Injections are a fast, effective way to deliver medications, nutrients, and vaccines directly into the bodybut not all injections are the How to Give Yourself a Shot GoodRx Methylcobalamin B12 Injection in Beverly Hills, Arcadia and Los Angeles County California Infusion Centers Vitamin C & B12 Injections JK Skin Aesthetics Petersfield B12 Shots Tampa FL, Urgent Care South Tampa Immediate Care 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 you