How to Research Peptides

1. Start on PubMed

PubMed is the free database of peer-reviewed biomedical literature. Search a peptide name (e.g. “BPC-157”), sort by newest, and read abstracts first. The abstract tells you the study design (animal vs. human, sample size) and the headline finding — enough to judge whether the claim is preliminary or established.

On this site, every claim links to its source via the ↗ source button. Click through and verify it yourself — that’s the whole point.

2. Understand the reliability tiers

Every source is sorted into a tier, and every claim inherits a score (0–100) from that tier plus corroboration. Scores are capped at the source’s ceiling — a marketing page can never earn a 95, no matter how the copy reads. These are the tiers, highest to lowest:

3. Animal vs. human evidence

Most peptides are Preclinical — the research is in rats or in vitro, not confirmed human trials. That’s legitimate signal (it tells you what scientists are studying), but it is not proof the peptide does the same thing in people. A few (semaglutide, tirzepatide) are Approved medicines with large human trials behind them. The research-status badge on each peptide page tells you which is which.

4. Spot weak and biased sources

• · Vendor pages exist to sell — benefits get emphasized, risks dropped. We cap them at 40/100.
• · Forums + blogs are anecdotes, not data. Useful for what people report, useless for what works.
• · “As seen in” logos and lists of cited studies that don’t actually match the claim are marketing tells.
• · Dosing advice from a seller is a conflict of interest — cross-check it against the research.