BPC-157 is so widely available that I doubt any pharmaceutical company would invest in the necessary research to prove or disprove its efficacy and safety, since they are unlikely to gain from it financially
Exploring the Side Effects: What You Need to Be Aware Of While glutathione is generally regarded as safe when taken at adequate levels, there are certain potential adverse effects to be aware of, particularly when utilising high doses or receiving intravenous (IV) glutathione injections
Daily sunscreen is essential
PMID 11292640
Xiao L, Wei F, Zhou Y, Anderson GJ, Frazer DM, Lim YC, et al
Combining Glutathione and Vitamin C: How They Work Glutathione IV and vitamin C therapy offer powerful antioxidants that rapidly improve your health and skin appearance