About this desk

What this desk is

Peptide Online Digest is an independent literature digest covering three research peptides — BPC-157, ipamorelin and tirzepatide. Every factual claim on the site traces to a numbered entry on the references page, and every quantitative claim carries its source inline. There is no clinic behind it, no practice, no laboratory and no catalogue.

The three compounds were not chosen because they are similar. They were chosen because they are not: one is an approved prescription medicine with large controlled trials behind it, one is an unapproved compound whose single published trial in people missed its endpoint, and one is an unapproved compound with a large animal literature and three small human pilot reports. Read together they make a point that none of them makes alone.

Why the address says shop and the pages do not

This site sits at a domain whose name reads like a storefront. It is worth saying directly that there is nothing to browse here and nothing to order, because a reader arriving with that expectation deserves to be told in the first thirty seconds rather than the last.

The mismatch turned out to be productive. A name that promises a shop is a good place to publish the argument that the literature cannot function as one. No peer-reviewed paper can say where a compound came from, what a given preparation contains, or whether the material in front of a reader is what its label claims. Papers characterise their material before the experiment starts, precisely because a result about an uncharacterised substance would not be a result. That characterisation stays inside the study.

So the position this desk takes is a flat one: the published record cannot tell anyone where to obtain anything, and any effect attributed to an unverified preparation is uninterpretable. That is not a hedge or a legal formula. It is the strongest true statement available, and the rest of the site is written from it.

How to read the pages

Each compound page follows the same arc: a plain-English summary, what the molecule is, how it is thought to work, what the research actually shows, reported effects and cited cautions, and where that compound sits in the identity question.

Two labels do real work throughout. Cited findings carry a bracketed number and come from the published record; the wording tracks what the source claims, including its species, its sample size and its limits. Anecdotal material is always introduced with the phrase anecdotal, not clinical evidence, is never given a number, and never carries a dose. Community reports appear because they are what people actually describe, not because they have been measured — and on these pages they are also exhibits in the argument, since they describe preparations nobody assayed.

Where a caution comes from mechanism rather than from a human study, the text says so. Where a figure exists in a source but not in this site's reference list, the figure is left out rather than attached to a citation that does not support it.

What this desk will not publish

A short list, kept short on purpose. No doses for people, in any form, including doses reverse-engineered from a study. Study doses appear only as descriptions of what an experiment administered, to a stated species.

No guidance on obtaining material, no assessment of any commercial operator, no comparison of places to get a compound, and no recommendation of any testing service. Those are the questions the literature has no answer to, and inventing an answer is worse than declining one.

No invented numbers. Where a purity statistic or a contamination rate would strengthen the argument, none is given, because the peer-reviewed literature does not contain one and a plausible figure would be a fabrication. And no medical advice: nothing here evaluates any individual's situation, and a clinician is the only appropriate reader of that.