When used together, they are thought to intensify each others' effects and are usually injected together as part of the same treatment injection cycle
Consistent with the in vitro findings, GHK-Cu increased antioxidant enzymes and decreased pro-inflammatory cytokines in vivo
But accuracy matters more than convenience

(9)Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin (9) Preparation of Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin (8)Fmoc-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin(20DMF)5203DMF3DMF2Fmoc-Lys(Boc)-OH1.1gDIEA0.4mlTBTU0.56gHOBT0.2gDMF10ml1.53DMF3DMF2Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin In the Fmoc-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin of step (8), add a decapping reagent (20% piperidine in DMF solution), and react at room temperature for 5 minutes , drained, re-add capping agent and react at room temperature for 20 minutes, wash 3 times with isopropanol, wash 3 times with DMF, wash 2 times with re-distilled DMF, drain, add Fmoc-Lys(Boc)-OH 1.1g, DIEA0.4ml, TBTU0.56g, HOBT0.2g, DMF10ml reacted at room temperature for 1.5 hours, dried with a vacuum pump, washed 3 times with isopropanol, washed 3 times with DMF, washed twice with distilled DMF, and dried to obtain Fmoc -Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin

Clinically, this manifests as peripheral neuropathy, characterized by numbness, painful tingling, burning sensations in the extremities, and eventual loss of motor function