TTR and nervous system disorder: The aim of this study was to evaluate the efficacy of an antioxidant treatment on: (a) ROS production directly assessed by Electron Paramagnetic Resonance (EPR); (b) the activities of the oxidative and antioxidative system and the presence of degradation and end products derived from cellular components, i.e., biomarkers of oxidative stress; (c) the biomarkers of systemic inflammatory response in plasma (i.e., levels of TNFα, IL-1β, IL-6, sICAM); (d) nitric oxide catabolism; and (e) a marker of neurologic disease (i.e., transthyretin—TTR).