An update from the FDA shows our advocacy to defend access to a critical antioxidant supplement is working. Action Alert! The FDA recently released a guidance on the agency’s policy towards N-acetyl-L-cysteine (NAC), a critical antioxidant supplement. It reiterates some of the points we covered in an earlier update on NAC, with a key addition: barring any issues that arise during a safety review currently being conducted, the agency is “likely to propose a rule providing that NAC is not excluded from the definition of dietary supplement.” We may be on the cusp of a huge victory in protecting access to affordable NAC supplements. Read more.