More good news on the research front regarding R-Lipoic Acid and NAC (N-Acetyl-Cysteine). This Lipoic Acid/NAC study on PUBMED informs you that:
"...the antioxidants, lipoic acid (1 mM) and/or N-acetyl cysteine (100 muM) exerted a protective effect as evidenced by decreases in oxidative stress and apoptotic markers."
"...antioxidant therapies based on lipoic acid and N-acetyl cysteine supplementation may be promising."
As you know, Geronova Research offers a very unique R-Lipoic Acid / NAC combination product. As with all of their quick-release lipoics, R-PLUS NAC uses the latest NA-Rala form of r-lipoic acid which provides for excellent bioavailability and meaningful plasma levels.
If you are not using Geronova brand lipoics, you are not using the most advanced lipoics in the world. I wouldn't use any other supplier.