Research Chemical
Unregulated peptides sold online labelled 'not for human use' — not a legitimate prescription pathway and not tested for patient safety.
Definition
'Research chemical' peptides are bulk substances sold by online vendors without a prescription, typically labelled 'for research use only.' They are not manufactured under pharmacy standards, not tested per batch for identity, potency, endotoxins or microbial contamination, and not reviewed by a clinician. Injecting them is unsafe and, in the US, skirts the prescription framework that legitimises peptide medicine. Every Meto peptide ships from an FDA-registered 503A pharmacy after clinician prescription.
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Compounded Peptide
A peptide prepared for an individual patient by a licensed compounding pharmacy, prescribed by a clinician and tested for identity, potency and contamination.
Pharmacy & Regulation503A Pharmacy
A US compounding pharmacy that prepares medications for individual patients based on a specific prescription.
SafetyEndotoxin
A bacterial cell-wall fragment that can contaminate injectables — tested for in every batch of a compounded peptide.
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