ghk cu peptide muscle growth does help with GHK-Cu is a copper used in regenerative GHK-Cu: The Peptide That Transforms

High performance

Corneal repair, tendon biology, skeletal muscle repair, and neurological injury models have each been examined , collectively establishing TB-500 as a broad-spectrum repair peptide with particular depth of characterisation in cardiac and wound healing biology

Hummers-Pradier E, Kochen MM

But it's like you're given this platform, and it does

most other claimed benefits (bone density, body composition) trace back to animal studies or preliminary/anecdotal reports, not confirmed human efficacy trials

CLINICALLY RESEARCHED AND PATENTED: Backed by 20+ years of research and over 900+ peer-reviewed papers, MitoQ mitochondrial support is the gold standard in mitochondrial science