Vitamin B12 Injections: What You Need To Know How to Administer an Intramuscular Injection at Home 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) : B12 vitamin Store A Retired RN About Vitamin B12 Injections
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