GHK-CuEvidence
The best-studied use is the least exciting one: skin.
The fastest-growing peptide in search has real but modest evidence for skin. Here's what's been tested in people, what hasn't, and how its legal status differs by form.
Evidence reviews
What human and animal research actually shows, and where it stops.
5 articles in this collection
RetatrutideEvidence
Remarkable trial results. Not a product you can legally buy.
Retatrutide produced some of the largest weight-loss results ever seen in trials. It also isn't approved, and anything sold online now is unregulated. Here's the full picture.
BPC-157Evidence
What do the human studies actually tell us?
A plain-English look at three small BPC-157 human reports, what they measured, and why they do not establish a recovery treatment.
All peptidesEvidence
Insulin is a peptide. So is a gray-market vial. Know the difference.
Peptides range from FDA-approved drugs like insulin to unregulated vials sold online. Here's what they are, the five kinds you'll hear about, and how to judge a peptide claim.
BPC-157Evidence
Tendon healing: promising biology, unanswered clinical questions.
Understand the difference between BPC-157 tendon experiments in animals and evidence that a treatment improves human injury recovery.
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All articles are AI-assisted editorial content checked against cited sources.