This is very rare
Commonly Reported Research Observations Injection-site redness or irritation Temporary swelling or warmth sensation at the administration site Burning or stinging during administration Temporary skin sensitivity or irritation Mild headaches Temporary fatigue or tiredness Mild nausea Temporary itching or flushing sensations Temporary blue-tinted discoloration beneath the administration area in some research settings Copper-Related Research Considerations Because GHK-Cu is a copper-binding peptide, some research protocols may monitor for: Copper- and zinc-balance variability Increased sensitivity in higher-frequency protocols Temporary skin-related response variability Individual differences in antioxidant-response pathways Research involving prolonged or higher-frequency protocols commonly investigates the inclusion of: Zinc supplementation Vitamin C supplementation alongside GHK-Curelated research models
Then, redo the tourniquet and try again at a different injection site
Some believe it has a role in developing endometriosis, malignancies, brain injuries, strokes, acute spinal cord injuries, and perhaps neurodegenerative diseases like Parkinsons, ALS, MND & Alzheimers disease
Implications for managed care pharmacy This study evaluated the cost-effectiveness of subcutaneous tirzepatide, oral semaglutide, subcutaneous semaglutide, and subcutaneous liraglutide for obesity management in adults without diabetes