Elevated Cortisol and Prolactin Levels: May result in stress-related symptoms, decreased libido, and gynecomastia in men
Genomic regulation: One of the most fascinating aspects of GHK-Cu, revealed by functional genomics studies, is its ability to modulate the expression of over 4,000 human genes
Choice depends on specific health goals, risk tolerance, budget constraints, and convenience preferences
Consistency over several months is required for visible results
Because this process happens at a cellular level over several weeks or months, some protocols suggest higher doses to ensure enough glutathione reaches the skin cells
This doesn't mean they're dangerous, but it means the full risk profile isn't established with the certainty that approved drugs provide