oral glutathione skin whitening randomized controlled trial 2024 Lack of efficacy of N-acetylcysteine in the treatment of facial melasma in women: a randomized, double-blind, placebo-controlled clinical Comparative Efficacy of Oral Tranexamic
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Chen Q, Espey MG, Sun AY, et al
[DOI] [PubMed] [Google Scholar] Rosen LS, Brown J, Laxa B, Boylos L, Reiswig L, Henner WD, Lum RT, Schow SR, Maack CA, Keck JG, Mascavage JC, Dombroski JA, Gomez RF, and Brown GL

In response, manufacturers are exploring innovative ways to produce the product from natural sources and are offering low-sodium or MSG-free products

The American Journal of Clinical Nutrition, 80 (3), 539-549
