Alpha Lipoic Acid, ALA, an antioxidant manufactured in the body, and it works together with other antioxidants such as vitamins C and E to promote growth, prevent cell damage, and help the body get rid of harmful substances. ALA, also known as thioctic acid or lipoic acid is produced in the body in extremely small amounts. Alpha lipoic acid is found naturally in vegetables, meats, and as a dietary supplement available in drug stores, health stores, and on the Internet.