You're lost in a hundred names.
Ozempic, Wegovy, Mounjaro, semaglutide, tirzepatide, retatrutide… You can't tell what's what, how they differ, or where to start. Every article assumes you already know.
Free guide · Beginner level
Understand it before you decide.
Everyone is talking about GLP-1 peptides. Almost no one actually explains them to you. This free beginner's guide does — no hype, no jargon, nothing to sell you.
If you've made it this far, you've probably already felt one of these three things.
It feels like everyone is selling you something.
Every "guide" you find is an influencer promising a miracle or someone trying to close a sale. You don't know who to trust — or how to tell honest information from a sales pitch.
You're afraid of getting something important wrong.
This touches your health. You worry about missing a side effect nobody warned you about, not really understanding the risks, or making an important decision without the full picture.
The problem isn't you. It's that no one has explained it to you properly.
You don't need to study medicine to understand this. You need a map. And nobody has handed you one yet.
The 1·2·3 Map
Instead of memorizing a chaotic list of names, you learn a single progression. Semaglutide activates one receptor. Tirzepatide, two. Retatrutide, three. A three-step ladder. The moment you see it, the whole landscape clicks into place in your head.
First you understand why it works — the biology — and only then the what falls into place. That's what this guide does, and what almost no other source bothers to do.
40 minutes of reading. A confusing topic, finally clear.
- You'll understand why your body resists losing weight — and why it isn't about willpower.
- You'll tell semaglutide, tirzepatide and retatrutide apart with a single mental image.
- You'll know what the evidence actually says about each one — the numbers, without the spin.
- You'll learn what almost no one tells you: muscle loss, the real side effects, and rebound.
- You'll have concrete criteria to evaluate the quality and the source of a product.
- You'll walk into any conversation with a doctor knowing what's being talked about.
Who we are
We're not selling you the shot. We're helping you understand it.
Peptidonomy is a science education and outreach project on peptides. We don't sell compounds or treatments. Our only bet: in a field full of noise, hype and rush, honest, well-explained information is the most valuable thing there is. This guide is exactly that — and it's only the beginning.
Made for people who want to understand. Not for people looking for a shortcut.
This guide is for you if…
- You're curious about GLP-1 peptides and want to actually understand them.
- You're tired of hype and jargon, and want a clear, honest explanation.
- You prefer to understand things properly before making any decision.
It's not for you if…
- You're looking for a dosing protocol or a self-administration manual: this isn't that.
- You want someone to tell you which brand to buy: we give you criteria, not brands.
- You expect promises of quick results: we give you science, not hype.
Start by understanding
The field is moving fast. Start by understanding it well.
Download The Beginner's Guide to GLP-1 Peptides for free and take the first step: understanding.