acetyl l carnitine running L-CARNITINE Acetyl-L-Carnitine 500 mg (formerly Carnityl)

GHK-Cu & KPV Blend $180.00 GHK-Cu & KPV blend is a dual-peptide blend containing copper(II)-binding tripeptide (GHK-Cu 50mg) and alpha-MSH C-terminal tripeptide fragment (KPV 20mg)

The mechanism was proposed to involve copper-dependent enzymes (notably lysyl oxidase, which catalyzes the cross-linking of collagen and elastin and requires copper as a cofactor), GHK-specific effects on growth factor activity, and downstream gene-expression effects in fibroblasts and other tissue-repair-relevant cell types

But there's some evidence that taking it can increase your strength and exercise performance

Harrison FE, Bowman GL, Polidori MC