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 Types of injections explained Intramuscular (IM) Inserted at 90 to deliver medication deep into the muscle, allowing relatively fast absorption due to rich blood supply. Subcutaneous (SC) Inserted at about 45 OMNIDRIP Updated May 2026 Fort Mill, South Carolina IV Hydration Phone Number Yelp Best Vitamin B12 Injection Site: Administering B12 Shots Vitamin B 12 Injections Denver, CO B12 Shots In Denver