Why is GHK-Cu sold as research-only peptide
Common research focuses include its influence on: Storage & Handling: Keep lyophilized peptide at -20C for long-term stability
World J Mens Health
[1] In moderate deficiencies, feeling tired, feeling faint, mouth ulcers, rapid breathing, upset stomach, pallor, hair loss, decreased ability to think and joint pain and the beginning of neurological symptoms, including abnormal sensations such as, numbness and tingling, and tinnitus may occur
This broader evaluation is especially important when patients describe slow healing, fatigue, recurrent injuries, or persistent inflammation
Over a long period, constant contact can potentially cause compounds from the rubber to leach into the solution, however minor