The 5 mg/mL concentration described above is the most common, but formulations at 2.5 mg/mL and other concentrations exist
doi: 10.1016/S0140-6736(08)61620-7 38 CooperG
GHK-Cu directly addresses these core issues
Phase Standard maintenance Dose 100 mg Frequency 2-3x weekly Notes Morning timing is commonly preferred
Mobility issues: The excess skin restricts your movement or makes exercise uncomfortable
Additional Credits: Arnold Schwarzenegger: Michael Ochs Archive/ Getty Images, Jose Canseco: Ron Vesely/ MLB Photos/ Getty Images, Lance Armstrong: Tim de Waele/ Corbis/ Getty Images, Ben Johnson: Mike Powel/ Allsport/ Getty Images, Liver King: Mega/ GC Images/ Getty Images, Joe Rogan: Carmen Mandato/ Getty Images, Chris Burnstead: Chris Bernacchi/ Diamond Images/ Getty Images Trevor Thieme is a Los Angeles-based writer and strength coach, and a former fitness editor at Mens Health