Natrol Alpha Lipoic Acid (ALA) is a powerful antioxidant that helps protect your cells from oxidative damage related to aging and environmental stress. ALA supplementation can support your energy metabolism and help rejuvenate your cells. ALA can also encourage glucose uptake by the body's cells. Natrol Alpha Lipoic Acid TR 600 mg is 100% vegetarian and formulated with a controlled delivery system which releases ALA over the course of 12 hours to provide all day antioxidant and energy support.