doi:10.18632/aging.100971 9
I like this one from Seeking Health
Glutathione for skin whitening has been shown to be safe and effective in numerous clinical studies
Furthermore, ROS-mediated ER stress is linked to the onset of apoptosis
Timing and Frequency Dose once daily due to MK-677s long half-life (~24 hours) Can be taken in the morning to avoid excessive hunger before bed, or at night to enhance sleep and GH output during deep sleep Avoid taking it immediately before heavy carbohydrate meals, as insulin blunts GH response Cycle Duration Standard cycle: 812 weeks Extended use: Up to 6 months in therapeutic settings Because MK-677 doesnt suppress natural GH production, long-term use is possible, but users should monitor glucose, insulin sensitivity, and appetite over time Reversible Effects All of MK-677s actions are reversiblemeaning: Appetite returns to baseline after discontinuation IGF-1 levels normalize within 710 days Water retention clears after cessation No post-cycle therapy (PCT) is needed, as it doesnt suppress testosterone or natural GH release MK-677 is a low-barrier entry into GH optimization, but proper dosing helps avoid overuse

Tesamorelin is also a peptide, but it belongs to a different class and has the potential to treat a host of concerns