What are B Vitamins?   B vitamins are a group of water-soluble nutrients that play an important role in many aspects of body function. Although each B vitamin has its own unique functions, they also work synergistically. With the exception of vitamin B12 they are not stored in the body so need to be constantly replenished. The need for B vitamins increases during times of stress and illness. Functions and Benefits of B vitamins  Energy production Digestion Cardiovascular health Protein, carbohydrate and fat metabolism Mental health and nervous system function...