Furthermore, activity of critical neurotransmitter synthesis enzymes such as dopamine beta hydroxylase have been long known to be reduced in AD (Cross et al., 1981), which are also dependent on copper for its catalytic activity and would likewise be compromised by copper deficiency (Vendelboe et al., 2016)
Unopened GHK-Cu serum stored at 4C retains 8590% peptide activity for 912 months, while the same product stored at 25C loses 3040% activity within 6 months
Three things
Int J Cancer 126(7):17711775 Burns A, Rossor M, Hecker J, Gauthier S, Petit H, Mller H-J, Rogers S, Friedhoff L (1999) The effects of donepezil in Alzheimers diseaseresults from a multinational Trial1
To be honest, the information on long-term human data is limited