About Peptide Reference
What this site is, who runs it, how it grades evidence, what it deliberately leaves out, and how to report an error or a missing study. Contact: hello@formblends.com.
Peptide Reference is the FormBlends network's evidence desk for the peptides people ask about. For each one it records what human trials exist, what FDA and its compounding advisory committee have said and when, what safety signals are on record, and a grade on a published scale. It contains no doses for research compounds, no self-administration instructions, and no links to sellers.
Why this site exists
Search for any peptide and the first page of results will pair a paragraph of rat data with a dosing table, a reconstitution calculator and a buy button. That combination is what FDA treats as marketing an unapproved drug for human use, and it is also, for most of these substances, a claim the evidence does not support. We wanted a page for each peptide that a careful person could read in ten minutes and come away knowing three things: what has been tested in humans, what a regulator has said, and what has not been done. This is that site.
The FormBlends main site covers peptides from a product perspective and tracks regulatory status across compounded GLP-1s and peptides; its 2026 report on the state of peptides and GLP-1 regulation is the long-form companion to this reference.
Who runs it
The site is written and maintained by the FormBlends editorial team, which also publishes formblends.com and the other sites in the FormBlends network. FormBlends operates a GLP-1 weight-loss program that dispenses compounded medication through licensed pharmacies. That is a commercial interest in one corner of this subject. It is disclosed here, in the medical disclaimer, and on the GLP-1 peptides page, which links to an encyclopedia rather than a product. FormBlends does not sell any of the fourteen research peptides covered here and has no financial relationship with any seller of them.
How the site is built
- One record per substance. Every fact on a peptide page traces to a structured record with the study list, PubMed ids, regulatory dates and sources. The evidence grade lookup reads the same records, so the tool and the page cannot disagree.
- A published scale. Four letters for the kind of human evidence, one flag for a published FDA safety concern, defined on the methodology page with the rules for what counts.
- Primary sources, dated. Trial designs and results from PubMed abstracts cited by id. Regulatory status from FDA's 503A pages, category lists, the Category 2 safety page, PCAC meeting pages, Drugs@FDA and DailyMed, each quoted with FDA's own "content current as of" date. When FDA's page changes, ours changes and the updated date moves.
- Searched, not assumed. We searched PubMed on the date shown on each page for each substance and its aliases. A study count of zero means we found none. If you know of one, tell us.
Editorial rules
No reviews, testimonials, star ratings or named clinicians. No claim of medical review that did not happen. No doses for any substance without an FDA label. No reconstitution or injection instructions except by reference to an approved product's label. No links to sellers of research chemicals. Compounded drugs are described as what they are: not FDA approved, not interchangeable with brand products. Numbers we cannot source are not published.
What this site is not
It is not medical advice. A grade is not a recommendation; it is a description of evidence. It is not a buying guide; there is nothing here to buy. It is not a substitute for a prescriber or a pharmacist, and it does not tell you how to use anything. Read the medical disclaimer.
Corrections and missing studies
If a page states something you cannot find in its source, if a PubMed id is wrong, if FDA has changed a status we have not caught, or if you know of a controlled human study we missed, write to hello@formblends.com with the page URL and the source. Corrections are made as a priority and noted on the page with the date.
Sources
- FormBlends Accessed September 4, 2026.
- FDA: Human Drug Compounding Accessed September 4, 2026.
- PubMed (National Library of Medicine) Accessed September 4, 2026.