The buttock: Your upper outer buttocks, or Dorsogluteals, on either side of your body, are common injection sites
The classic symptoms of B12 deficiency are persistent fatigue, tingling or numbness in the hands and feet, problems with memory and concentration, mouth ulcers, a sore red tongue, and pale or yellow-tinged skin
Some people come in for a boost of energy, while others want to strengthen their immune system, improve mood, or enhance metabolism
Many people take MIC B12 injections as part of their weight reduction program, but they can also benefit those who are tired all the time, have liver problems, or have other metabolic issues