Editorial policy
How we make money
This book is free. It is funded by affiliate commissions: if you buy something through a link in these pages, we may earn a commission at no additional cost to you.
We are telling you this on page three, not in small print at the back, because the entire value of this book depends on you being able to trust what it says.
What we don't do
We have no exclusive supplier. No company sponsors this book, owns it, reviews it before publication or has any say in what it says. No peptide vendor, clinic or telehealth platform is behind it.
Commercial relationships do not affect our evidence ratings. The ratings are generated by the published rubric, applied to the literature. A company cannot buy a star.
Nothing rated ★☆☆☆☆ carries a commercial link, in any country, regardless of how many people are searching for it.
The three-part test for a link
An entry carries a commercial link only when all three are true:
- There is meaningful consumer demand
- It clears our evidence floor
- A lawful route exists in at least one country we serve
Stated in that order deliberately. Eligibility is a property of the compound, not of a commercial relationship. No partnership makes an entry eligible. No absence of one removes an entry from this book.
What that costs us, concretely
Of 110 entries, 24 carry a commercial link. The other 86 do not.
The most-searched compound in the book, retatrutide, carries none, because it is investigational and there is no approved product. The two most-discussed recovery peptides, BPC-157 and TB-500, carry none. Most of the longevity tier is still at a research stage below the evidence floor.
The entries that do carry links are heavily weighted toward approved medicines and ordinary cosmetics: the most established, best-evidenced things in the book.
Revenue did not shape which entries carry links. The rubric did.
Where links go
Links resolve by country, and the destination depends on what is lawful where you are. In some countries there is currently no lawful route, and the link says so plainly.
Where a compound is prescription-only, which is most of this book, links resolve only to licensed, prescriber-mediated services. We do not link to research-chemical suppliers for compounds intended for human use.
What we're not
We are not doctors, and this is not medical advice. We do not know your history, your medications or your risks. Nothing here is a recommendation that you take anything.
We are a reference. Use us to arrive at a professional's office knowing what to ask.
Corrections
This field moves. Regulatory status changed twice in 2026 alone, and some of what is printed here will be out of date before the next edition.
If you find an error, tell us. Corrections are published in the changelog of the following edition, and subscribers get every edition free, permanently.