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PEPTIDESUNCENSORED

Evidence-graded atlas · Sept 2026

See the molecule. Understand the protocol. Ignore the hype. Mechanisms, reported ranges, cycles and evidence grades for the peptides people actually talk about.

Explore the atlasHow we grade evidence
compounds
23compounds
evidence grades
4evidence grades
dose labels
3dose labels
blends explained
5blends explained

Specimen 01/08 · BPC-157
15 residues · stylized

Repair

Open dossier

Residue 01 · Gly (G)

GEPPPGKPADDAGLV

Most discussed right now

All 23

Start with a goal

Six doors into the atlas.

Each goal opens a filtered atlas. The grade on every chip tells you how much human evidence stands behind the name.
  • 4 compounds

    Repair

    Tendons, gut, soft tissue

    The most hyped corner of the atlas. Promising rodents, very few people.

    • BPC-157C
    • TB-500C
    • GHK-CuC
  • 7 compounds

    Metabolic

    Fat loss & glucose

    Where the strongest human evidence lives, because pharma paid for it.

    • SemaglutideA
    • TirzepatideA
    • RetatrutideA
  • 4 compounds

    GH-axis

    GH & body composition

    Secretagogues and GHRH analogs. One approved drug, lots of extrapolation.

    • CJC-1295C
    • IpamorelinC
    • TesamorelinA
  • 8 compounds

    Longevity

    Sleep, longevity & focus

    Mitochondria, telomeres, NAD. The biggest claims per human subject.

    • NAD+C
    • MOTS-cC
    • EpitalonD
  • 2 compounds

    Immune

    Immune modulation

    Thymic peptides with decades of clinical use outside the US.

    • Thymosin alpha-1B
    • KPVD
  • 2 compounds

    Skin & Hair

    Skin, hair, pigment

    Copper peptides, tanning peptides and the gap between cream and syringe.

    • GHK-CuC
    • Melanotan IID

Pick a question

Three questions that clear up most of the confusion.

Question 1 of 3

What is a peptide?

A short chain of amino acids, roughly 2 to 50 links long. Longer chains fold into proteins. Insulin, at 51, sits right on the line.

Most peptides are digested like food, which is why so many are injected. That single fact explains half the routes, risks and costs you will read about.

Peptide basics

  1. Amino acid

    1

  2. Peptide

    ~2–50

  3. Protein

    50+, folded

Chain length, real molecules

amino acids · linear scale

  • OxytocinHormone9
  • BPC-157Gastric fragment15
  • GlucagonHormone29
  • SemaglutideGLP-1 analog31
  • TesamorelinGHRH analog44
  • InsulinCalled both51
  • Growth hormoneFolded protein191

50 amino acids: the usual naming line between peptide and protein. Insulin sits right on it.

Chain lengths in amino acids: Oxytocin 9, BPC-157 15, Glucagon 29, Semaglutide 31, Tesamorelin 44, Insulin 51, Growth hormone 191. Chains up to about 50 are usually called peptides; longer, folded chains are proteins.

Question 2 of 3

Why does evidence quality vary so wildly?

Because the ladder is long. A result in a dish, then a rat, then a case report, then a pilot, then a randomized trial, then several. Most research-market peptides stall on the second rung.

Drugs with pharma money behind them climb to the top. That is why the GLP-1 drugs are Grade A and the repair peptides are not.

How we grade
  1. 01Cell / labD

    A molecule does something in a dish. Says little about a living body.

  2. 02AnimalC or D

    Effects in a whole organism, usually rodents. Doses, metabolism and outcomes often fail to translate.

  3. 03Case reportsC

    A clinician describes one or a few patients. Good for spotting signals and side effects. No comparison group.

  4. 04Uncontrolled pilotC

    A small group is measured before and after. Cannot separate the drug from placebo, time or expectation.

  5. 05Randomized trialB

    People are randomly assigned to drug or control, ideally blinded. The first rung that can show cause and effect.

  6. 06Multiple RCTs / approvalA

    Several adequate trials agree, or a regulator has reviewed the full data for a defined use.

Higher rungs are better at ruling out bias and chance. They are not automatically right, and a large, careful animal program can teach more than a sloppy pilot. Grade tags show where a compound usually lands when that is the highest rung it has reached (6 rungs, weakest first).

Question 3 of 3

What does a cycle actually look like?

Three shapes cover most of what you will see: a daily block with a break, a twice-weekly loading phase that tapers, and a weekly injection titrated up over months.

Some of those shapes come from FDA labels. Others are forum convention. Every pattern on this site says which.

Open the cycle visualizer

  • Continuous

    Label

    How chronic-use drugs are usually studied and labeled.

  • Titrated

    Label

    GLP-1 labels step up every 4 weeks so side effects can settle.

  • Cycled

    Community

    Common in research-peptide discussion. Rarely tested in a trial.

Dossier of the week

BPC-157

BPC-157 is a synthetic 15-amino-acid peptide derived from a protein found in human gastric juice. In rodents it speeds healing of tendon, ligament, muscle and gut. In humans, the published record is three tiny uncontrolled reports. That gap is the whole story.

Open dossier

Sequence · 15 residues

GEPPPGKPADDAGLV
Reported range
250–500 mcg
Frequency
1–2× daily
Cycle
4–8 weeks, then a break
Evidence
Grade C: Thin human data

Range shown is a commonly reported community figure, labeled as such in the dossier. Not a dose for you.

Tools

Instruments, not instructions.

Lab arithmetic and pattern playback, running live below. They convert and draw. They never pick a number for you.

Free guide

Ten peptide claims. Ten verdicts.

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Free guide · PDF

10 Peptide Claims, Fact-Checked

Ten claims people repeat on X, YouTube and in group chats, each checked against FDA labels, trials and lab studies. A verdict and sources for every one.

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This site will not tell you what to take.

It will tell you what is known, what is claimed, and what nobody has tested. The decision, and the conversation with a clinician, stay with you.

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