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More specifically, they noted that at least one subject's Central corneal endothelial cells (CEC) density measurement was not completed before enrollment, which was one of the enrollment criteria, and another enrolled subject had Intraocular pressure (IOP) that was outside the criteria

L-cysteine supplementation also helps to prevent the downregulation of vitamin D regulatory genes by way of increasing GSH N-Acetylcysteine (NAC) is another form of cysteine that is considered less toxic, less susceptible to oxidation (and dimerization) and is more soluble in water, making it a better source of cysteine than parenteral administration of cysteine itself. GSH is necessary to help protect our cells from damage due to oxidative stress, mercury and other toxic metals, alcohol, persistent organic pollutants, and much more

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