Copper toxicity considerations Copper toxicity from GHK-Cu is extremely unlikely at standard doses but remains a theoretical concern worth understanding
Cognitive function was evaluated with the Brief Assessment of Cognition in Schizophrenia (BACS) battery of cognitive tests, which allows a measurement of global cognitive function across six domains: verbal memory with word list learning task, working memory with digit sequencing task, verbal fluency with controlled oral word association task, motor function with token motor task, attention and speed of information processing with symbol coding task and executive functions with Tower of London task
Moreover, caffeine has been shown to inhibit chronic inflammation, its anti-inflammatory nature downregulates the pro-inflammatory cytokines and microglial activation, thereby protecting neuronal damage (156)
The "minimal initial benefit" group (approximately 5-10% of users) reported limited improvements during treatment making discontinuation effects irrelevant, typically explained by inadequate product quality with degraded or low-concentration GHK-Cu, inappropriate application technique reducing absorption, unrealistic expectations exceeding what any topical can achieve, severe underlying pathology requiring medical intervention beyond cosmetic peptides, or individual non-responsiveness to copper peptide treatment for genetic or physiological reasons
