Vitamin injections are important to the body for growth, cell production, blood and nerve function. They are given to treat low levels of Vitamins or in conditions where requirements may be increased such as in chronic illnesses, but can also speed up metabolism and to enhance energy production. Most cases of vitamin deficiency stem from absorption problems rather than dietary deficiencies. Vitamin injections have a large advantage over oral supplements as they allow for direct access to your cells and bypass your gastrointestnal tract. Your body depends on vitamins for a host of functions: Helping maintain normal energy levels. Promoting healthy neurological activity. Supporting normal homocysteine levels for healthy cardiac function. Helping to ease stress and sleeplessness. Maintaining healthy cell growth and repair.Promoting normal immune functions.