Additional Supporting Information may be found in the online version of this article.

mds22401supptable1.doc52KSupporting Information Table 1. Baseline medications for each subject.
mds22401supptable2.doc36KSupporting Information Table 2. Means (SD) for UPDRS scores, walking time and tapping for placebo and glutathione groups. P-values represent changes in glutathione vs. changes in placebo from baseline to week 4 (treatment period) and from week 4 to week 12 (no treatment follow-up period).

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