Alpha Lipoic Acid IV Therapy for Liver Diseases and Diabetes Integrated Redox Profiling: Simultaneous Determination of Ubiquinol 10, Ubiquinone 10, and Alpha Lipoic Acid in Serum by LC MS MS Glutathione 500 mg Plus 21st Century Vitamins 21st Century Vitamins N Acetyl L Cysteine & R Alpha Lipoic Acid 500 mg 200 mg N acetyl L cysteine (NAC) and alpha lipoic acid (ALA) are highly complementary nutrients. Together, they support the clearing of normal cellular debris and maintain normal cellular function.* NAC