B Vitamins are involved in many metabolic reactions within the human body and they play a key role in skin health, immune and nervous system function, muscle tone and the prevention of anemia. Vitamin B – encompasses a group of 8 vitamins that are found in food items, a supplement or injection that contains these sub-types is called a B Complex. B Vitamins are crucial in the normal functions of our body and prolonged deficiencies can lead to health complications.