Glutathione does not treat the cause of Parkinson’s disease, but helps improve the symptoms and limits the action of free radicals. The free radicals degenerate the cells in the mid part of the brain, which decreases the amount of dopamine. Glutathione does not raise the amount of dopamine, but it allows the dopamine within the brain to become more effective. About 80-90% of patients with Parkinson’s disease that were treated with glutathione improved dramatically.