Types of injections explained! Understanding the angles: intramuscular (im) : injects deep into the muscle at 90. subcutaneous (sc) : goes under the skin at 45. intravenous (iv) : Vitamin B 12 Injection Mobile and Clinic IV Therapy ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco Subcutaneous vs intramuscular what's the difference? #vitamintherapy #theb12store #injection B 12 Intramuscular vs. Subcutaneous Injection Vitamin B12 Injections Anupa Wellness