Doctor's Best Alpha-Lipoic Acid helps support glucose metabolism and regenerate antioxidants.* Alpha-lipoic acid (ALA) is an organic compound made inside our mitochondrion, also known as the powerhouse of cells. Here it helps convert enzymes to energy and acts as an antioxidant, defending your system against free radicals. It also helps us metabolize glucose thereby promoting healthy blood sugar levels as part of a healthy diet.* Alpha-lipoic acid has been called a "universal antioxidant" because it is both water and fat soluble. This allows it to work in every cell or tissue in the body. As we age, our ability to synthesize ALA decreases and levels of oxidized proteins increase. Supplementing with ALA, also known as a "mitochondrial nutrient", helps protect your cells.