GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring tripeptide found in human plasma, saliva, and urine
Typically, patients are either given a strong topical numbing cream or they are injected with lidocaine to numb the area that will be treated
These peptides may come up in conversations with patients who are looking for support with: Slow recovery from workouts Soft tissue irritation General aches related to training or activity Mobility concerns Physical resilience Wellness optimization Healthy aging goals Recovery after stress, burnout, or overtraining However, symptoms like pain, swelling, weakness, digestive issues, fatigue, and reduced mobility should not be dismissed as simple recovery problems. They may indicate an underlying injury, inflammatory condition, hormonal issue, nutritional deficiency, sleep disorder, medication effect, or medical condition that needs proper evaluation
For broader background, see our overview of what a peptide is