B2 (Riboflavin)
Riboflavin is water-soluble. It is stable to heat, oxidation and acid. It disintegrates in the presence of alkali or UV light. Riboflavin is necessary for cell respiration because it works with enzymes in the utilization of cell oxygen. It functions as part of a group of enzymes that are involved in the breakdown and utilization of carbohydrates, fats and proteins.
There is no known toxicity of riboflavin. An early sign of deficiency is the appearance of cracks and sores in the corners of the mouth, a red, sore tongue, a feeling of grit and sand on the insides of the eyelids, burning of the eyes, changes in the cornea, sensitivity to light, lesions of the lips, scaling around the nose, mouth, forehead and ears, trembling, sluggishness, dizziness and a lack of stamina.
