Normally, these symptoms quickly resolve and are nothing to be concerned about
PMID: 28340339 Zhang C, Xie Y, Chen H, et al
This goes with its ample range of beneficial effects, obtained within the same dose range [1,2,3,4,5,6,7,8,9,10,11,15,27,28,29,30,33,109,124,125], as the most valuable proof of the neurotransmitter requires that the application of the chemical directly to the target cells should produce the same response observed when the chemical is naturally released from the neurons [12,13,14]
Cellular effects duration vs plasma half-life Critical distinction: Plasma half-life duration of effects GHK-Cu clears blood in hours But cellular effects last days How GHK-Cu works: Peptide binds to cell surface receptors Triggers intracellular signaling cascades Activates gene expression changes Initiates collagen synthesis, wound healing, etc