Methodology
Last updated: 2026-05-02
What this site does
pepi.ninja covers two intersecting subjects: (1) the FDA’s review and policy framework for compounded peptide preparations, and (2) the publicly available scientific literature on individual peptide molecules.
We are a curator. We do not generate original research. We do not give medical advice. We do not endorse the use of any substance.
What this site does not do
- We do not sell, distribute, manufacture, or facilitate the sale of any substance.
- We do not give personalized medical advice.
- We do not make therapeutic claims. Our peptide pages report what cited sources state, with neutral verbs only.
- We are not affiliated with any peptide manufacturer, compounding pharmacy, or supplement vendor.
Source whitelist
The only sources we cite as authority:
- PubMed-indexed peer-reviewed papers (PMID required)
- FDA documents (warning letters, PCAC minutes, briefing materials, guidance documents, DailyMed labels)
- ClinicalTrials.gov registered trials (NCT number required)
- NIH/NLM resources (MeSH, PubChem)
- DrugBank
- International regulators (EMA, Health Canada, TGA)
- Cochrane reviews
- Recognized references (Merck Manual, USP)
- Established science journalism (STAT News, Endpoints News, Reuters Health, Nature News) — for news posts only, not for biological claims
Attribution rules
Every factual claim about a peptide cites a specific whitelisted source with a working link.
We use neutral reportage verbs only.
We include study limitations the authors themselves note.
No first-person editorial endorsement.
Every page displays its last_updated date.
Reporting a citation error
If you find a citation that is broken, misattributed, or misrepresents its source, email corrections@pepi.ninja (forwards to editorial). Include the URL of the page, the citation in question, and the issue. We aim to verify and correct within seven days.