How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Vitamin B12 Injections Online Course Delashh Aesthetics & Training Limited Feeling low on energy? Your body might be telling you something. Vitamin B12 is essential for energy, mood, and brain function. If you're experiencing fatigue, weakness, or brain fog, a B12 injection Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg B12 vitamin Store A Retired RN About Vitamin B12 Injections