How this site is made
Editorial policy
Peptide Sport covers peptide therapy broadly — the recovery and growth-hormone peptides, the GLP-1 drugs, NAD+, and the telehealth clinics that sell them. This page is the standard all of it is held to, written so you can check whether we met it.
Every claim is tied to a source you can open
Across 139 guides we cite 513 distinct peer-reviewed studies by their PubMed ID, alongside official FDA labeling. Nothing here is sourced to a vendor's product page, a forum protocol or another blog. Where a claim rests on animal or cell-culture work — which, for most of these compounds, is all there is — we say so in the sentence that makes the claim, rather than letting “studies show” do the work of hiding it. Several of our reviews grade the compounds they cover on an explicit evidence tier, so the verdict is a label, not a mood you have to infer from the prose. You can see the source count on every piece in the research index.
How providers are ranked — and where the money sits in it
Affiliate partners are placed first on every ranked list on this site. That is a commercial position, and it is disclosed rather than dressed up as a verdict: the ordering rule is the same on every ranking, it is enforced automatically so it cannot quietly change on one page, and we never write copy claiming the list is ordered purely on merit. What a commission cannot buy is the assessment printed beside each provider. Nothing here carries a number: no score out of ten, no star rating, no letter grade. A number invites you to trust the number instead of the evidence, and ours would be an opinion dressed as a measurement. What each provider gets instead is a sentence, and at least one stated drawback — including the ones that pay us, because a review with nothing uncomfortable in it is marketing. Read the whole money picture on how we earn.
Prices are read off the seller's own page, on a date we print
Every dollar figure we publish about a provider was read directly from that provider's own public page, and we record both the URL we read it on and the date we read it. We do not repeat a price from a third-party blog, an affiliate feed or a comparison table someone else compiled — a figure with no first-hand check behind it is a guess wearing a dollar sign. Prices in this market move, so entries are re-checked and the verification date moves with them; a page that has not been re-checked shows its real, older date rather than a refreshed one. Where an advertised headline is really a prepay rate, an auto-refill-only rate, or a medication price with a membership underneath it, we name that trap in plain words and print the true month-to-month cost next to it. The whole dataset is public in our price transparency index.
“Not published” is a finding, and we print it
When a provider publishes no price, we say “pricing not published” and leave the field empty. We do not estimate it, average it, or borrow a number from somewhere else to keep the table looking complete. The same rule applies to the catalog: if a company is widely described as selling a compound and we cannot find that compound anywhere on its own site, the finding is that we could not find it — and that has cost providers a place on a ranking more than once. An empty cell is information. A filled-in cell we could not verify is a fabrication, and it is the specific failure this site exists to avoid.
When we get something wrong
We will get things wrong: this field moves, prices change without notice, and regulators reclassify compounds mid-year. When we find an error — or you do — we fix the page rather than argue with it, and the piece's updated date moves so you can see it changed. When a correction changes a conclusion rather than a detail, we say what changed inside the piece instead of editing quietly and hoping nobody had already read it. If a source we relied on is retracted or superseded, the claim built on it comes out. Corrections go to reach@peptidesport.com and we read all of them.
No commission changes a word
No partner sees our copy before it runs, and none can approve, edit or veto a conclusion. We do not take payment to publish a review and we do not accept fees to change one. An unflattering finding about a paying provider stays in — that is the only version of this promise that means anything, because a promise that only holds for companies who owe us nothing is not a promise. If a page is ever sponsored, it will say so at the top, in the first thing you read.
What this site is not
It is not medical advice, and it is not a shop. Most of the compounds covered here are not FDA-approved for recovery, performance or body composition, several are sold only as research chemicals, and many are banned in tested sport, year-round, whether or not a clinician prescribed them. We state that on the page rather than in a footer, because for a competing athlete it is usually the only fact that matters. See the medical disclaimer and talk to a licensed clinician before starting anything.
Written and maintained by Derek Olsson, Sports Science Editor — more about who writes here.