Look for third-party testing and Certificates of Analysis (COAs) Avoid vendors that dont list ingredients, batch info, or offer transparency Be cautious with unusually cheap or high-concentration vials Low-quality peptides may contain contaminants, incorrect amino acid sequences, or bacterial endotoxinsall of which can provoke immune reactions or reduce efficacy
the evidence-based fixes
For weight loss medications like liraglutide, compounded versions might be an option when the brand name medication isnt available or isnt covered by insurance
Malarkodi KP, Balachandar AV, Sivaprasad R, and Varalakshmi P
Current COAs are posted on our Certifications page
References Huang Y, Li Y, Pan H, Han L