Riboflavin or Vitamin B2 is a water-soluble vitamin involved in energy metabolism. It helps the body utilise other b vitamins in our body, these vitamins assist the body to use energy from foods. They also protect cells from oxidative damage. Commonly, riboflavin and thiamine deficiencies are seen together. Some of the deficiency symptoms include cracks in the corners of the mouth, sore throat, and hypersensitivity to light and a common side effect of vitamin B2 deficiency is migraine.