This very powerful supplement contains 300 mg of lipoic acid, along with 4 mg of pure biotin and 500 mg of taurine. Research shows that lipoic acid competes for biotin-dependent enzymes. Long term supplementation of lipoic acid may reduce biotin levels, so it is recommended to supply them together. Taurine and biotin play important roles in maintaining healthy insulin function.* Made with non-GMO ingredients.