GHK-Cu helps reverse that slowdown
There is also an increased sensitization of the excitatory neurotransmitter system, such as NMDA glutamate receptors, the reduction in the number of GABA receptors (downregulation), the shift of benzodiazepine receptors to an inverse agonist state, and compensatory changes in other components of the macromolecular GABA/benzodiazepine/chloride ionophore complex (for review see, i.e., [219,220,221,222,223,224,225])
Arch Toxicol 94 , 26032623 (2020)
Concise review: human articular cartilage repair: sources and detection of cytotoxicity and genotoxicity in photo-crosslinkable hydrogel bioscaffolds
The cost typically ranges from $150 to $400 per session, depending on the specific formulation and location