Yes, both are available as oral supplements, and oral glutathione has been shown in a 6-month randomized trial to meaningfully increase the bodys glutathione stores
The easier the treated switches were to comb, the less risk of hair breakage and fall out in real life
doi: 10.1159/000521264 Summary Keywords GLP-1R agonists, obesity, weight-reducing drugs, metabolic diseases, dual agonism Citation Wang J-Y, Wang Q-W, Yang X-Y, Yang W, Li D-R, Jin J-Y, Zhang H-C and Zhang X-F (2023) GLP1 receptor agonists for the treatment of obesity: Role as a promising approach
Research shows high doses of NR (a NAD precursor) might cause tumors, though scientists haven't confirmed similar effects in humans