Alpha Lipoic SustainAlpha lipoic acid (ALA) is an antioxidant functioning in glucose metabolism and 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 both to raise and to maintain ALA blood levels with ALA release over time.* Alpha Lipoic Sustain Highlights The Universal Antioxidant + Biotin Recycles Other Antioxidants to Support Their Activity