- Alpha-Lipoic Acid 300 mg—formerly Meta Lipoate® 300--features high quality alpha-lipoic acid (ALA) in a convenient, one tablet dosage of 300 mg. ALA may protect tissues from free radicals, as well as support healthy glucose metabolism and nerve tissue health. ALA has broad antioxidant activity in both aqueous and fatty tissues. It not only scavenges free radicals, but also recycles other antioxidants—factors contributing to many of its benefits.*