is glutathione really effective proven to be in reducing pigmentation, tanning, brightening the skin and glowing the skin. I took 6 sessions of glutathione with vitamin C, b complex and NAC and these are the Glutathione Before and After Results

Nitazoxanide, an antiparasitic drug, can sometimes cause yellow to greenish urine again, due to pigment excretion

Letter by Violi and Pignatelli regarding article, "Effects of random allocation to vitamin E supplementation on the occurrence of venous thromboembolism: report from the Women's Health Study"

Food intolerances: Sensitivity to high-sulfur foods, such as eggs, garlic, onions, cruciferous vegetables like kale and protein powders which contain the amino acids cysteine and methionine

GSH was shown to be the main inhibitor in the active site of the main protease (M pro ), the essential protein for virus invasion, and cysteine (Cys300) glutathionylation inhibits M pro activity by blocking its dimerization supporting the use of GSH in COVID-19 patients (Davis et al., 2021

Its not approved by the FDA, its banned by WADA for athletes, and its showing up on military do not use lists