It's a relatively high amount for a supplement to have, but it shouldn't be a problem for most people since the maximum per-day allowance for adults is 400mcg.34 That said, you may want to avoid Doctor's Best Glutathione + Milk Thistle if you take another supplement that includes selenium or eat a lot of selenium-rich foods (e.g., Brazil nuts, tuna)
The human tri-peptide GHK and tissue remodeling 4
doi:10.3390/biomedicines9060609 Hsieh MJ, Lee CH, Chueh HY, et al
LQ: data curation, formal analysis, project administration, and writingreview and editing
"Chemical Biology of H2S Signaling through Persulfidation"
Brain & Cognitive Health Supports healthy brain function by reducing oxidative damage in brain cells