Deficiency symptoms for Vitamin B-12 include: depression and mood disorders, anemia,fatigue, memory failure,high homocysteine levels, and low blood pressure. While Vitamin B-12 shots addresses these deficiencies, it may also be prescribed to boost energy, and drive cognitive function.
Less serious side effects may include:
Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak.
There's no solid evidence that vitamin B-12 injections aid weight loss. Proponents of vitamin B-12 injections say the shots give you more energy and boost your metabolism, helping you shed unwanted pounds.