Where Should Vitamin B12 Be Injected? A Real World Guide to Feeling Your Best Rejuve Aesthetics & Wellness Needle Injection Techniques Every Nurse Should Know! Whether you're prepping for your NCLEX or brushing up on your skills, here's a quick breakdown of the most common injection routes you'll encounter Best Vitamin B12 Injection Sites: Where to Inject B12 PA Relief Is intramuscular (IM) administration of vitamin B12 injections preferred over subcutaneous (SC) administration? Injection Sites Quick Revision for Nursing Students Understanding the correct injection site is essential for safe medication administration. Intramuscular (IM) Injection Sites Deltoid Vastus Lateralis Ventrogluteal Sandoz Vitamin B12 Injectable Solution 1000 mcg 10 mL Vitamin B12