The honest corner of the peptide world.
Everyone's talking about peptides — and most of the loudest voices are the ones selling. We translate the jargon, rate the strength of the actual evidence, and teach you how to tell a serious supplier from a sketchy one, so you can make your own call.
Start somewhere
Short routes through the library, in orderThe Library
How we rate the evidence
Every article carries a label describing how strong the human research actually is. A peptide being interesting is not the same as a peptide being proven, and we would rather say so plainly than let a label do the persuading.
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The Peptide Piper is affiliated with Arctimus Labs. Unsubscribe anytime.Reconstitution Calculator
Lyophilized powder has to be mixed with liquid before it can be measured. Getting that arithmetic wrong is one of the most common ways people end up with ten times what they intended — so here is the maths, shown plainly.
This is a unit converter, not advice. It tells you what a concentration works out to. It does not tell you what to use, and nothing on this page should be read as a recommendation to use anything.
How the arithmetic works
Concentration is just contents divided by liquid: a 10 mg vial in 2 mL is 5 mg/mL. Draw volume is the amount you want divided by that concentration. A U‑100 insulin syringe is marked so that 100 units equals 1 mL, so units are simply millilitres times one hundred.
Adding more water does not change how much is in the vial. It only changes how much liquid each measure works out to — which is why two people can follow the same number and take very different amounts.
About The Peptide Piper
The peptide conversation online has a problem: the loudest voices are usually the ones selling. Discount codes, miracle stories, zero downsides — it reads less like information and more like a sales floor.
The Peptide Piper exists to be the calm, honest corner of that world. We cover the culture and the science, we translate the jargon, and we teach you how to tell a serious supplier from a sketchy one — so you can make your own call instead of being led by whoever has the catchiest tune.
No hype. No codes. No "this changed my life." Just the map.
How we handle evidence
Every article carries an evidence rating, from Strong Human Evidence down to Primarily Anecdotal. We apply it consistently, including to compounds that are popular, including to compounds our affiliated brand sells. A rating that only ever pointed one direction would be worthless, so ours does not.
We also don't publish transformation stories or before-and-afters. A screen full of curated wins is the least reliable way to understand anything.
What we are not
We are not clinicians, and nothing here is medical advice, a treatment recommendation, or guidance on using any compound. Many of the peptides discussed on this site are investigational — studied in research settings, not approved by the FDA for the uses people discuss online. Where that's true, we say so in the article. Decisions about your health belong between you and a qualified medical professional who knows your history.
The evidence moves. This is where we say so.
Regulatory decisions, systematic reviews, and any time a compound's evidence rating changes on this site. Newest first. Quiet months stay quiet — we'd rather post nothing than manufacture news.
Ten questions. Then you'll know.
Answer these about a supplier you're considering. Nothing is sent anywhere — this runs entirely in your browser. Each answer explains what it actually tells you.
Paste the sales copy. See what it's doing.
Take any product page, ad or influencer caption and drop it in. This sorts the claims: what you could actually check, what's written so it can never be wrong, and where a mechanism is standing in for a result. It judges the writing, not the compound.
What the categories mean
- Checkable — a claim with something behind it you could go and verify.
- Unfalsifiable — written so that nothing could ever prove it wrong. Ask what evidence would disprove it.
- Mechanism as result — describes a pathway, implies an outcome. A plausible route is not a destination.
- Dosing — a seller telling you how much to take.
- Legal positioning — research-use-only language sitting next to consumer framing.
- Missing — what a serious seller would have stated and didn't.
Ask a question. Get pointed at the evidence.
The Piper answers from this library and nothing else — these articles, each with an evidence rating. Every answer shows you the articles it came from, so you can go read them and decide for yourself. If the library doesn't cover something, it will tell you that instead of guessing.
What the Piper won't do
- Give you a dose, a protocol, a cycle length, or reconstitution volumes. The site doesn't publish them and neither will the assistant.
- Tell you whether something is right for you, safe for you, or worth trying. That's a conversation with a clinician who knows your history.
- Answer a question about your body with a product or a vendor — including ours. Ask where to buy and it'll tell you how to evaluate any supplier, and disclose who we're affiliated with. Describe a symptom and it won't sell you anything at all.
- Answer from outside this library. If the articles don't cover it, it says so.