Supplements & Herbal Remedies for Parkinson's APDA Enhanced accumulation of reduced glutathione by Scopoletin improves survivability of dopaminergic neurons in Parkinson's model Cell Death & Disease Central nervous system uptake of intranasal glutathione in Parkinson's disease npj Parkinson's Disease Randomized, double'blind, pilot evaluation of intravenous glutathione in Parkinson's disease