The safest approach is a regulated system where peptides are traceable, independently tested and prescribed within a medical framework
Research-grade peptides may have lower purity, unknown contaminants, and no sterility testing
These can result in local infections, systemic inflammation, or unexpected endocrine consequences
Common adverse effects include irritant contact dermatitis, scaling, and itching, often attributed to the propylene glycol component, which can lead to poor patient compliance
During medical studies, some patients reported severe side effects such as pain and swelling at the injection site, joint pain, anxiety, panic attacks, increased heart rate, insomnia or drowsiness, weakness, fatigue, loss of appetite, depression, or anhedonia