With Biotin. Powerful Antioxidant. Gluten Free. Jarrow FORMULAS® Alpha Lipoic Acid is a unique lipid and water soluble antioxidant that is a cofactor in energy production helping to regulate glucose metabolism. ALA also promotes the synthesis of glutathione. Biotin is an essential cofactor that is important for energy production and lipid metabolism. Biotin is added for optimum ALA activity.