Alpha Lipoic Acid ALA is an antioxidant that supports normal glucose metabolism and cellular energy production. Jarrow Formulas Alpha Lipoic Sustain is formulated with advanced bilayer Sustain tablets that combine 1/3 Quick Release and 2/3 Sustained Release formats to raise and to maintain ALA blood levels over time. Universal Antioxidant with Alpha Lipoic Acid And Biotin A Special Bilayer Quick Release/Sustained Release Format Releases ALA Over a Longer Period of Time Supports Cellular Energy Production and Normal Glucose Metabolism Non-GMO, Vegan, Gluten Free Suggested Usage Adults take 1 tablet 1-2 times a day with meals or as directed by your qualified healthcare professional.