Who should avoid GHK-CU Wilson's disease or copper metabolism disorders Active malignancies (until more research exists) Pregnancy and breastfeeding Known copper sensitivity or allergy Those unable to maintain sterile injection technique When uncertain, consult a healthcare provider familiar with peptide research
A What are the benefits of taking glutathione
Absorption and Urinary Excretion of Peptides after Collagen Tripeptide Ingestion in Humans
For hair growth specifically, combining topical GHK-Cu with microneedling is supported by the strongest evidence as shown in the 2025 Kuceki study which achieved 26.5% regrowth with this combination approach
This document is provided as a response to solicited questions about the use of Glutathione.
"Stable gastric pentadecapeptide BPC 157 in trials for inflammatory bowel disease (PL-10, PLD-116, PL 14736, Pliva, Croatia)