alpha-Lipoic Acid-d5 is the deuterium labeled alpha-Lipoic Acid. alpha-Lipoic Acid is an antioxidant, which is an essential cofactor of mitochondrial enzyme complexes. alpha-Lipoic Acid inhibits NF-kappaB-dependent HIV-1 LTR activation[1][2][3]. alpha-Lipoic Acid induces endoplasmic reticulum (ER) stress-mediated apoptosis in hepatoma cells[4].