Alpha Lipoic Acid TR is a timed release alpha lipoic acid (ALA) supplement from Natrol. It delivers all day whole body cell rejuvenation with its unique formulation. ALA is a natural 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. It can also encourage glucose uptake by your body's cells. This is a 100% vegetarian formula with a controlled delivery system which released ALA over the course of 12 hours to provide all day antioxidant and energy support.