Alpha-lipoic acid is an antioxidant produced naturally in the body. It can also be obtained from healthy foods like spinach, broccoli and beets. Lipoic acid helps boost levels of one of your body’s other key antioxidants, glutathione. It also promotes healthy function of mitochondria, your cells’ energy generators. Research shows that lipoic acid supplementation helps support the body’s ability to process blood sugars and insulin, and it supports nerve health. Lipoic acid is a tried-and-true supplement that has been around a long time. Many clinical studies have validated its benefits. For instance, it’s been shown to improve markers of metabolic health and to support the health of the delicate cells that line the inside of blood vessels called endothelial cells. This formula also contains biotin, a B-vitamin that complements lipoic acid’s role in supporting metabolic health.