Information is a summary of published research and regulatory status as understood in 2026 and may be out of date. Check current labels, regulator websites (MHRA, FDA, EMA) and the primary literature.
"Not approved" means no major regulator has authorised the compound as a medicine. Products sold online as "research peptides" are not made to pharmaceutical standards and can be mislabelled, contaminated or wrongly dosed. Some of these substances are banned in competitive sport (WADA).
Key-study references were compiled from memory rather than a live database lookup. Each one links to a PubMed search for the paper title so you can confirm authors, journal and figures.