l-glutathione benefits scientific evidence Frontiers Glutathione: Benefits and Supplements

Cannabidiol (CBD) (which is technically not a dietary supplement but is frequently sold as one) may help alleviate non-motor symptoms of Parkinson's disease (such as mood and sleep disturbances and psychoses) according to preliminary studies, but CBD does not appear to improve tremor or motor function in people with Parkinson's disease

2022, 15.: 10.3390/ph15101225 247.0 247.1 Ng TK, Chu KO, Wang CC, Pang CP: Green Tea Catechins as Therapeutic Antioxidants for Glaucoma Treatment

30 About half of the children have ataxia, developmental delay, conjunctivitis, and visual problems, including optic atrophy

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That's where supplements come in, and there are two options - lipotropic vitamin injections and oral supplements