Injecting substances can expose individuals that use injection drugs to serious harm, but understanding the difference between safer and more harmful sites can help reduce these potential dangers. Here's a breakdown of Sandoz Vitamin B12 Injectable Solution 1000 mcg 10 mL Vitamin B12 Where Does B12 Injection Go TikTok B12 Shot: Step by Step Guide for Self Injection TikTok Subcutaneous (SC) and Intramuscular (IM) Injections Must Knows for Subcutaneous administration: Pinch skin with non dominant hand and hold syringe with dominant hand Always inject: 2 inches away from umbilicus (for abdomen) 3 inches