GHK Cu Peptide Side Effects Safety, Treatments Neurogan Health GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Peptides are often well tolerated, but they can still cause temporary reactions while the body adapts. Some commonly reported effects include: BPC 157 headaches, nausea, increased appetite TB 500 GHK Cu Facial Serum Empower Pharmacy GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health