Injectable GHK-Cu is not FDA-approved for human/therapeutic use and is sold by suppliers under "research use only" labeling
Key Studies and Findings Clinical Trials on Systemic Oxidative Stress Biomarkers A placebo-controlled trial demonstrated that glutathione significantly improved systemic oxidative stress biomarkersand glutathione production in patients with chronic illnesses
These articles often referenced ER visits tied to unregulated importsnot licensed 503A or 503B compoundersbut failed to clarify the distinction
Sikiric, P., Seiwerth, S., Rucman, R., Turkovic, B., Stancic Rokotov, D., Brcic, L., & Sebecic, B
Presented for research literature review only Davis FC (1997)