How we verify what we publish
This page exists so you can judge whether this encyclopedia deserves your trust, without having to take our word for anything.
Who is behind it
PeptiXtreme is the education arm of Grupo VidaXtreme, with more than seventeen years working in health, performance and aesthetics. The encyclopedia and the course are maintained by the PeptiXtreme editorial team, advised by the group's professionals.
It is worth stating what we are not: not a clinic, not a pharmacy, and none of this is a medical consultation. Where a decision calls for clinical judgment, we say so and point you to a professional.
Why we sell nothing here
The education arm markets no substance. That is deliberate, and it has a practical consequence: we can write that a heavily sold compound has no backing, because we do not depend on selling it. If this encyclopedia linked to a shop, every critical claim in it would be open to question, so it does not and will not.
Where each claim comes from
The 451 references in this encyclopedia were checked one by one against the original PubMed record: each identifier was opened and the title, journal and year confirmed against what we publish. None was written from memory or copied from another website.
Where a compound has no peer-reviewed literature, its page says so in those words and carries no references. We would rather show an honest empty list than pad one.
How we grade the evidence
Each page carries a label summarising the level of backing. The rule is mechanical, not editorial: we count how many of its references are human studies or meta-analyses. Four or more, "human trials available". One to three, "limited human evidence". None, "preclinical evidence only". And where there is no literature at all, we say so.
We always separate what has been shown in cell cultures, in animals and in people, because that is the most common confusion and the most expensive one.
Why we publish no dosages
No page on this site carries amounts, regimens or preparation instructions, and that is not an oversight. No single figure works for everyone: it depends on medical history, on current medication and on the goal. Publishing a number would pretend those differences do not matter.
The one apparent exception is the titles of cited studies, which sometimes contain a figure. We reproduce them verbatim because trimming them would make the citation impossible to verify, and because a trial's title is not a recommendation.
When we update
Research moves, particularly on the metabolic side. We revise pages when evidence appears that changes what the previous version said, and every page shows the date of its last review. If you find an error or a reference that no longer holds, tell us: it gets corrected, and we are grateful for it.
What to do about an error
If you spot an inaccuracy, let us know on WhatsApp. We correct it and record the review date.