why does ghk cu hurt after injecting do glow peptides burn or sting injection? If you're using GHK-Cu, BPC-157, or TB-500 for skin health, hair, or tissue repair, this is a common question — and usually not GHK-Cu Side Effects: What Does
Description
Commonly reported minor adverse effects include nausea, headache, somnolence (drowsiness), and mild paresthesia (tingling or numbness) in the extremities

Weight loss peptides span a broader category than just GLP-1 agonists

Contamination is the biggest practical risk: non-sterile mixing or low-purity powder is more dangerous than the peptide itself
10.1016/j.ejphar.2013.01.026 94 NusserZ.LujanR.LaubeG.RobertsJ