I have just started to take L-Theanine capsules for better sleep. I saw this in vitro study with interesting results. Maybe it also could have some other benefits for PwP which could make it worth adding to the supplement list.
academicjournals.org/journa...
"In this study, L-Th impeded the progression of PD in vitro through its hindrance of the most prominent PD biomarkers such as dopaminergic neurodegeneration, dopaminergic cytotoxicity, reduced cell density, and reduced cell area. Thus, this study presents the first specific treatment candidate for TCE-induced PD in scientific literature"