Always look for recent, dated COAs, not old forum testimonials
If you are also looking at immune-support formulas, the Immunity Supplements collection can help you compare options
There's some desensitization that can occur
La coloracin azul del producto es un buen indicador de la presencia efectiva de cobre
The intranasal GHK-Cu treatment was found to delay cognitive impairment, reduce amyloid plaques, and lower inflammation levels in the frontal cortex and hippocampus .37 Randomized controlled trials in human patients are needed to confirm the benefit of GHK-Cu for cognitive decline and Alzheimers disease as well as to evaluate safe and effective human dosing (the human dose equivalent of 15mg/kg in mice would be ~1.2mg/kg, though data on this or any other dosing nasally in humans is not currently available), but preliminary animal trials are promising
For example , this includes older adults, vegans, and people with gut disorders that block nutrient absorption