Caffeine mobilises the body's energy reserves by breaking down sugar. It stimulates the heart, dilates the vessels, causes bronchial relaxation, increases gastric acid production, and boosts the metabolic rate. Taurine is an amino acid and plays a key role in the development of the central nervous sy stem. It stimulates the metabolism and has a detoxifying effect. Vitamins The vitamins Niacin, Pantothenic Acid, B6, B12 are essential for healthy hair, skin and nails. Together these ingredients boost the metabolism, blood circulation and the central nervous system. They help the body break down toxins and give it the fresh supply of energy it needs quickly and effectively.