So they bought whatever Amazon recommended, got no results, and assumed glutathione doesnt work for them. It wasnt them
Huenchuguala, S., Muoz, P., Graumann, R., Paris, I., & Segura-Aguilar, J
1988 DOI: 10.1016/0014-5793(88)80509-x PMID: 3169264 Read on PubMed Advances in Experimental Medicine and Biology Effects of glycyl-histidyl-lysyl chelated Cu(II) on ferritin dependent lipid peroxidation Miller DM, DeSilva D, Pickart L 1990 DOI: 10.1007/978-1-4684-5730-8_11 PMID: 2244543 Read on PubMed Cosmetics GHK and DNA: Resetting the Human Genome to Health Pickart L, Vasquez-Soltero JM, Margolina A 2014 DOI: 10.1155/2014/151479 PMID: 25210707 Read on PubMed FASEB Journal Tripeptide-copper complex GHK-Cu(2+) transiently activates the inflammatory response in Jurkat T-cells and B-cell lymphoma cells Gruchlik A, Jurzak M, Chodurek E, Dzierewicz Z 2010 DOI: 10.1096/fasebj.24.1_supplement.lb87 PMID: 20639517 Read on PubMed Experimental Dermatology Effect of the tripeptide-copper complex L-alanyl-L-histidyl-L-lysine-Cu2+ on hair growth in C57BL/6 mice Pyo HK, Yoo HG, Won CH, et al

At a normal therapeutic dose, acetaminophen is primarily metabolized by the liver to sulfate and glucuronide conjugates, while a SMALL amount is metabolized by CYP2E1 to a highly reactive intermediate, N-acetyl-p-benzoquinone imine (NAPQI)
These include subcutaneous immunotherapy (SCIT) and sublingual immunotherapies (SLIT) [122]