glutathione oral supplement effectiveness 9 Health Benefits of Glutathione in Skin Aging and
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A two-sided p-value below 0.05 was considered statistically significant

The decreased proteasome activity induced by quercetin may not be reversed following suppression of the JNK and p38 MAPK signaling pathways

This new study examined 536 subjects, so it wasn't huge, but not small either

Chua, K
Cell Death Differ 13 , 21292139 (2006)

Distribution of radio-labeled N -acetyl-l-cysteine in Sprague-Dawley rats and its effect on glutathione metabolism following single and repeat dosing by oral gavage
