Supports Amino Acid Metabolism* Promotes Normal Immune Function* Biotin is a water-soluble vitamin necessary for normal growth and body function.* Biotin functions as a key regulatory element in gluconeogenesis, fatty acid synthesis, and in the metabolism of some amino acids.* Alongside its role in energy production, biotin enhances the synthesis of certain proteins.* In addition, biotin promotes healthy immune system function and plays a critical role in skin health.* Natural color variation may occur in this product.