Seven minutes. One honest answer.

Tell us what you want to change, then a short screen of your history, medicines and safety questions. The Compare Peptide Checkup scores every AERVYN pen against your answers and the published evidence, sends you to the one that fits — and tells you when none of them should be bought.

Around 7 minutes. You can save and come back.

Your answers stay on this device. No account, no upload — nothing leaves your browser unless you ask us to email your report or arrange a clinician review.

The range · 24 pre-filled pens

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Tesamorelin
NAD+
Wolverine
BPC-157
Semaglutide
MOTS-C
GHK-Cu
Klow
+16more pens

What you'll get

01
One pen, with a fit score
Every one of the 24 pens is scored 0–100 against your goal, focus areas and evidence. You land on the one that fits, with the reasons spelled out.
02
Evidence grade for your goal
Strong to insufficient, from our maintained database. When the evidence is early or animal-only, the result says so.
03
Regulatory status where you live
Authorised, investigational or not authorised — taken from the database, never inferred.
04
A no, when your history says no
A safety flag or a Higher concern label rules a pen out. Nothing goes in the cart; you get the reasons and a clinician link instead.

Brand promise

The Compare Peptide Checkup can tell you not to buy. That's the point.

A Higher concern label links to a clinician, not a checkout. Matching is deterministic: a clinician-reviewable rules engine reads our maintained evidence and regulatory database — nothing is generated freehand.