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Vitamin injections, also called vitamin shots or wellness injections, are a form of nutritional therapy where essential vitamins and minerals are administered directly into the body, usually via a small injection into a muscle

Vitamin B 12 (cobalamin) deficiency is a common cause of megaloblastic anemia, a variety of neuropsychiatric symptoms, and elevated serum homocysteine levels, especially in older persons

Surprisingly, Vitamin B12 works simultaneously with folic acid to support nerve function, DNA production, and red blood cell formation, also playing a direct role in pigment metabolism

Journal of the American Geriatrics Society 1992;40:1197204