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What the science says about peptides, without the hype.

The free daily newsletter to learn what peptides do, see real results, and know what's actually been tested.

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  • We read the studies behind every email
  • Every claim labeled and sourced
staateEvery morning

Your 5-minute peptide briefing

5-minute read

What staate covers

52Peptides and related compounds explained
13Approved, or tested in large human trials
12Tested only in animals or cells so far
5 minTo read each morning

52 peptides and related compounds. Tap one to look it up.

Here's what lands in your inbox every morning.

The same five parts every day, so you always know where to look. It takes about five minutes to read.

staateto me Every morning

Your 5-minute peptide briefing

Morning

Why today’s topic is worth five minutes, and the most interesting result in it.

The main story

The short answer first, then what it is, what the studies found and the honest part.

The good news

One new result that went right, what happens next, and the source.

The roundup

Three to five new studies, one sentence each, each labeled by whether it was tested in people or only in animals.

Your turn

Four answers, one tap each. Tomorrow's email shows how everyone voted.

  1. MorningA few lines on today’s topic and the most interesting result in it.A few lines to start the day.
  2. The main storyOne question answered start to finish: what it is, what people use it for and what the studies found.One question, answered start to finish.
  3. The good newsOne encouraging new result, like an approval or a trial that worked, with what happens next.One encouraging new result.
  4. The roundupNew studies in a sentence each, each one labeled by what it was tested in.New studies, a sentence each, labeled.
  5. Your turnA one-tap poll. The results go at the top of the next morning’s email.A one-tap poll on what comes next.

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Pick what you care about.

Not sure? Try the peptide finder

Each page lists the peptides for that goal. Having a human study means someone tested it in people, not that it works.

Every peptide is rated by its evidence.

We read the studies, not press releases or forum threads, and every claim links to its source. You will see these four ratings across the site.

  • Strong human evidenceAn approved drug, or tested in several large human trials.
  • Some human studiesTested in at least one proper human trial.
  • Early human dataOnly small human studies so far.
  • Animal studies onlyOnly tested in animals or cells so far.

Written in plain English for people with no science background. Nothing here is dosing advice.

Online: Copper peptide creams are clinically proven to reduce wrinkles.

The studies: The early cream results were never checked by other scientists. The one proper test on skin found no real difference.

GHK-Cu overall: Some human studies

See everything on GHK-Cu

Look up any peptide.

Of 52 peptides, 13 have strong human evidence, 16 have some human studies, 11 have early human data and 12 have only been tested in animals.

  • Strong human evidence13
  • Some human studies16
  • Early human data11
  • Animal studies only12
  • Banned in sport

Open the full database

New to peptides? Start here.

All 8 guides
A woman in her fifties reading on a tablet at her kitchen table What are peptides? What a peptide is, how it differs from collagen powder and from a drug, and why most are injected. Start here if you have never read about peptides before. Read the guide
  1. How to read peptide research Mouse studies, small trials and big trials, and how much each one counts.
  2. Side effects and red flags Which side effects are common and which mean call a doctor.
  3. Legal status in the US What FDA-approved, compounded and research-only actually mean.
  4. The weight-loss shots, explained Semaglutide, tirzepatide and the newer weight-loss shots, trial by trial.

Common questions, answered.

What the FDA has done on peptides in 2026.

Full legal-status guide

  1. FDA moves against mass-made copies of weight-loss shots

    Pharmacies were allowed to make copies of semaglutide and tirzepatide during the shortages. Those ended in 2025, and the FDA said it would act against the mass-marketed versions.

    Source: FDA announcement Read the weight-loss shot guide

  2. Five peptides come off the FDA safety-concern list

    BPC-157, TB-500, CJC-1295, KPV and MOTS-c left the FDA list of risky ingredients. They are still not approved, so US pharmacies cannot make them.

    Source: FDA compounding list Read the legal-status guide

  3. FDA advisers back a popular injury peptide

    The panel voted 8 to 6 for BPC-157, the peptide studied for injuries. The FDA itself has not decided yet.

    Source: FDA advisory committee What the vote changes

Save peptides and keep private notes.

  • Saved peptidesKeep a short list and sort it by how well each was tested.
  • A private logNotes and numbers over time, on a chart. Only you can see it.
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The rest of your health, in plain English.

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One email a morning about what peptides do and what has actually been tested. Free, and written in plain English.

 Free. One email a morning. Unsubscribe in one click.
How often does it come, and what does it cost?

One email each morning, and it is free. Every email has a one-click unsubscribe link at the bottom.

Who writes it?

We read the studies and write every email in plain English. Each claim links to the study or agency page it came from.

Can I ask you a question?

Yes. Hit reply on any email and ask. If enough readers ask the same thing, it becomes the main story.

Is this medical advice?

No. Staate explains published research for education. Decisions about starting, stopping or dosing any drug belong with a licensed clinician who knows your history.