Peptide Checkup · 24 AERVYN pens · Can end at no pen
Not sure which peptide fits?
Find out which pen fits — if any — in 7 minutes.
Answer ten short sections about your goal, your history and your medicines. A rules engine checks them against our evidence and regulatory database and scores all 24 AERVYN pens in the range. You land on the one that fits — with the reasons spelled out — or you are told not to buy.
- Free
- No account
- Answers stay in your browser
- 18+ only
Your match
Sample result
NAD+
500 mg / 3 mL · £285
United Kingdom · Not an authorised medicine; sold as a supplement (oral precursors) or as an unlicensed injectable.
Why it fits · from the answers
- Feeling tired all the time despite sleeping
- Slow recovery between sessions or after illness
- Healthy ageing and long-term energy
Not recommended for you
The other outcome. A safety flag or a Higher concern label rules a pen out — nothing goes in your cart; you get the reasons and a clinician link instead.
- 24
- AERVYN pens scored against your answers
- 32
- compound records, maintained by hand
- 5
- jurisdictions with regulatory status on record
- 10
- short sections · about 7 minutes
01 — How it works
Answer. Check. Land on a pen — or on a no.
The Peptide Checkup is the front door to the range. It exists to say which pen fits and, just as often, that none of them does.
- 01Answer≈7 minYour goal and the specific problem behind it, then your history in categories, your medicines by class and a short safety screen. Skip what does not apply. No account, no essays, nothing uploaded.
- 02We checkDeterministicA fixed set of rules — not a chatbot — checks your answers against 32 compound records and the regulatory status in 5 jurisdictions, then scores every pen in the range on goal, focus, evidence, experience and the safety verdict. Same answers, same result.
- 03You landOn a pen, or on a noYou arrive on the pen that fits with the reasons spelled out, the evidence grade for your goal, what to review first and two alternatives. If your answers raise a flag, you are told not to buy — and exactly why.
02 — What the Checkup checks
Four things it checks before it names a pen.
7 minutes of structured questions — categories, not essays — run through a deterministic rules engine against the evidence and regulatory database, then scored against the range.
- 01Whether anything in the range has human evidence for your goal — and how strong it is, on a five-point scale from Strong to Insufficient
- 02Conditions in your history that change the picture, from thyroid, cardiovascular and metabolic conditions to cancer history, pregnancy and mental health
- 03Your medicines and supplements by class, and the interactions a clinician would ask about before anything else
- 04Regulatory status where you live, anti-doping status if you compete in tested sport, and whether a clinician should be your first call
03 — The range it chooses from
24 pre-filled pens. One is scored highest for you — if any is.
Single compounds and blends across weight, recovery, skin, energy, sleep and more — every one a pre-filled AERVYN pen with a published certificate for its lot. The Checkup scores all of them; it never picks from a shortlist.
See the whole range- Tesamorelin
- NAD+
- Wolverine
- BPC-157
- Semaglutide
- MOTS-C
- GHK-Cu
- +17more
04 — What you get
A pen with the reasons. Or the reasons not to.
Plus the full report — 11 sections from evidence and regulatory status to dosing context and questions for a clinician — saved on your device and printable.
01
One pen, with the reasons
Every pen in the range is scored against your goal, focus areas and the evidence. You land on the one that fits, with the answers that put it there.
02
The evidence grade for your goal
Strong to Insufficient, from a database we maintain by hand. When the evidence is early or animal-only, the result says so before it says anything else.
03
Regulatory status where you live
Authorised, investigational or not authorised in your jurisdiction, with the date we last reviewed it — taken from the record, 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.
05 — The rule
The Checkup can tell you not to buy. That's the point.
Every result is one of three verdicts. The third one links to a clinician, not a checkout — and it is the reason the first two mean something.
01
Your match
The pen fits your goal and nothing in your answers rules it out. You land on its page with the reasons and the option to add it to your cart.
02
Match — review first
The pen fits, but something needs a look first — a compound that is an authorised medicine elsewhere, one still in trials, or a condition to check. The page says exactly what.
03
Not recommended for you
A safety flag or a Higher concern label rules it out. Nothing goes in your cart. You get the reasons, the alternatives and a clinician link instead.
Pre-filled pens
Every pen in the range is a pre-filled 3 mL dose-dial pen from AERVYN. No vials, no reconstitution, no drawing up.
Every lot tested
Purity by HPLC, identity by LC-MS and endotoxin by LAL — by an independent laboratory (Janoshik Analytical), not by us.
Certificate published
The certificate of analysis is published against the lot number on the carton, and a copy ships in the box.
06 — Questions
Before you start.
Peptide Checkup
Find your pen in 7 minutes. Or find out it's none of them.
Not medical advice · Research-use labelling applies · 18+ only · It can say no
≈7 min
Start the Checkup