Vitamin B12 is considered by many to be one of the most important vitamins as it has has a long list of benefits! Because our bodies cannot produce Vitamin B12, we must get it from our diet. Vitamin B12 is key in the formulation of our nerves and red blood cells, that carry oxygen throughout our body. It plays key roles in the digestion since it binds to proteins in the digestive process. Benefits of Vitamin B12 injections include increased energy and metabolism, improved mental clarity and mood, better sleep, and boosts the immune system.