Vitamin B2 150mg 30-60-90-120-180-250-500-200 Tablets UK Riboflavin Vitamin B2 is also known as Riboflavin and is a water soluble vitamin. Its name comes from its chemical structure,”ribo” from the sugar ribose and “flavin” from the ring shape that give Riboflavin its characteristic yellow colour. Its role is to promote normal energy metabolism and maintain the health of a normal nervous system. It maintains the health of the body by acting as an antioxidant. Antioxidants act by detecting and destroying free radicals, preventing the body from cellular damage and oxidative stress. In addition, Vitamin B2 is used to promote normal health of the body’s vision, red blood cells and mucous membranes.