What exactly is a peptide?
A short chain of amino acids — shorter than proteins. Many hormones (insulin, GLP-1, growth hormone releasing hormone) are peptides, which is why peptide-based medicines are a legitimate and large category of pharmacy. The same fact is also why "peptide" tells you nothing about a specific compound’s evidence or safety.
Are peptides legal?
It depends entirely on which peptide and where. Approved peptide medicines are legal with a prescription. Unapproved compounds sold as "research chemicals" occupy a gray zone that many jurisdictions are actively tightening, and several compounds on this site are prohibited in sport regardless of their medical status.
Why won’t you publish dosing protocols?
Publishing doses for unapproved compounds would be practicing medicine without evidence — and for the research-grade category, without even verified product identity. Where dosing matters (approved medicines), the label and the prescriber are the right sources.
What does "research use only" actually mean?
It is a marketing-adjacent label meaning the product was not manufactured, tested, or approved for human use. In practice: no verified identity, no verified sterility, no pharmacovigilance. It is a real category, and it is not a safety category.
How do I read a peptide study critically?
Check four things first: the species (rodent results routinely fail in humans), the sample size, whether the trial was blinded and placebo-controlled, and whether the endpoint was a clinical outcome or a biomarker. This catalog’s evidence tiers encode exactly this reading.
What is the difference between compounded and approved products?
Approved products have inspected manufacturing and verified content. Compounded products (where legal) are pharmacist-prepared. "Research chemical" vials have neither — which is why the same molecule name can describe radically different risk.
Which compounds on this site are actually approved medicines?
See the FDA-approved reference table: semaglutide, tirzepatide, teriparatide, tesamorelin, and a set of hormones and injectables are approved in defined indications. Everything else on this site is investigational or unapproved.
Evidence tier: Approved medicine · Last reviewed: 2026-09-05 · Sources cited below.