Peptides, minus the hype

Evidence-first peptide guides for recovery, performance, and beauty

Honest, plain-English answers on what peptides are and whether they actually work, from BPC-157 and GHK-Cu to the weight loss peptides everyone is asking about, Retatrutide versus the GLP-1s semaglutide and tirzepatide. Every claim sourced, every guide routes to your doctor, never around one, and every guide leaves you better informed.

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BPC-157·GHK-Cu·TB-500·KPV·Semax·Epitalon·MOTs-C·PT-141·CJC-1295·Ipamorelin·Tesamorelin·Selank·DSIP·AOD-9604·LL-37·Thymosin Alpha-1·
The free GLP-1 Weight Loss Guide from Peptide Navigator
Free Guide · Coming soon

The GLP-1 Weight Loss Guide. Yours free.

Everyone knows Ozempic and Wegovy. Almost nobody explains the medicine. Our plain-English guide breaks down how GLP-1 drugs actually work, injection versus pill, the real side effects, and how to protect your muscle and metabolic health. No hype, no sales pitch.

  • How GLP-1 drugs really work
  • Injection vs pill, compared
  • Side effects, told straight
  • Questions to ask your doctor
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Independent, no brand pays to appear
01 / INDEPENDENT

No brand pays to appear

No affiliate sales codes, no sponsored placements. What you read is what we found in the research.

Evidence first, animal and human data told apart
02 / EVIDENCE FIRST

Animal and human data, told apart

We are clear about which is which, and where the evidence gets thin or runs out entirely.

Plain English, written to inform not to sell
03 / PLAIN ENGLISH

Written to inform, not to sell

No hype, no molecule worship. Just what is known, what is not, and what to ask your doctor.

Latest articles

Start with the evidence

New, plain-English, evidence-first writing every week on the peptides people are asking about.

Six peptides recommended and DSIP not recommended after the July 2026 FDA advisory committee meetingFDA Watch
FDA Watch

FDA peptide meeting results: six advanced, one did not

Epitalon and Semax joined the four from Day 1. DSIP was voted down. Six of seven recommended, and what happens next.

10 min read
Four peptides BPC-157, TB-500, MOTS-c and KPV marked panel approved after the July 2026 FDA advisory committee voteFDA Watch
FDA Watch

FDA advisers back four peptides for compounding

On July 23 the panel voted to recommend BPC-157, TB-500, MOTS-c and KPV, against the FDA's own scientists. What the vote means, and what it does not.

9 min read
Empty FDA hearing room with seven unlabeled peptide vials on the table beneath a world map screen, ahead of the July 2026 compounding voteFDA Watch
FDA Watch

The July FDA peptide hearing: what could happen

Seven peptides, two days of live votes. The full timeline in, how it works, and the realistic outcomes for BPC-157 and the rest.

7 min read
Testosterone and peptide vials with readiness and hormone-option graphicsHormones
Hormones

Testosterone and peptides: your real options in 2026

As the Department of War screens troops 30+ for testosterone, here are the actual options, TRT vs peptide signaling, explained straight.

8 min read
A family of different ages looking confused while researching Ozempic and WegovyWeight Loss
Weight Loss

Ozempic, Wegovy, Mounjaro: how GLP-1 drugs really work

Everyone knows the names. Almost nobody understands the medicine. Semaglutide, tirzepatide, retatrutide, injection vs pill, told straight.

9 min read
BPC-157 benefits and side effects: what the evidence showsEvidence
Evidence

BPC-157 benefits and side effects: what the evidence shows

A plain look at the animal and human studies, the benefits, side effects, and where they stop.

7 min read
TB-500 thymosin beta-4 evidence scorecard: strong animal data, unproven for recovery, banned in sportEvidence
Evidence

TB-500 (thymosin beta-4): what the evidence shows

Strong animal data, thin human proof, banned in sport, and just recommended by the FDA panel. The honest picture.

8 min read
MOTS-c evidence scorecard: promising preclinical, unproven in humans, recommended by the FDA panelEvidence
Evidence

MOTS-c: what the evidence actually shows

The mitochondrial peptide with real metabolic biology and no human proof yet. Just recommended by the FDA panel for obesity and osteoporosis.

7 min read
Epitalon evidence scorecard: research mostly from one group, anti-aging claims unproven, recommended by the FDA panelEvidence
Evidence

Epitalon: what the evidence actually shows

The telomere and anti-aging peptide with the biggest claims and the smallest evidence base. The honest breakdown.

7 min read
Semax evidence scorecard: established medical use in Russia, limited Western trials, recommended by the FDA panelEvidence
Evidence

Semax: what the evidence actually shows

An approved drug in Russia, a cult nootropic everywhere else, and barely tested in the West. The honest read.

7 min read
FDA Watch
FDA Watch

Understanding the FDA compounding decision

What the advisory committee vote does, and does not, mean.

6 min read
Explainer
Explainer

How to read a peptide study

Sample size, controls, and why animal results do not always carry over.

9 min read
Safety
Safety

Peptides and your doctor: the questions to ask

How to bring peptides up with a provider, and what to want answered.

5 min read
Peptide vial beside a gavel and legal books, 2026 decision pendingLegal
Legal

Are peptides legal? The honest 2026 answer

Three legal lanes, the 2026 reclassification, and the July FDA hearing that could change access. Plain English.

11 min read
Beauty
Beauty

GHK-Cu and skin: what the science supports

Separating the cosmetic evidence from the marketing.

6 min read
Safety
Safety

Know your source: this is your body

Why "research use only" is a legal shield, not a safety guarantee, and how to spot a real source.

8 min read
Live · FDA Peptide Watch Updated Jul 24, 2026

The FDA peptide decision, tracked honestly.

Twelve peptides came off the FDA's restricted list in April 2026. Now the advisory committee decides, in stages, whether any earn a legal compounding pathway. This is one milestone on a long road, not the finish. We track every step, and we tell you plainly what it does and does not mean.

Next milestone
PCAC Hearing · 7 peptides
Jul 23–24, 2026 · FDA White Oak Campus, Silver Spring MD
00Days
00Hrs
00Min
00Sec
Jul 22, 2026 Public comment closes
Jul 23–24, 2026 PCAC hearing · first 7
By Feb 2027 Second PCAC · ~5 more
Feb 2027 GHK-Cu · separate review
2027+ Rulemaking · a year or more
If it clears Category 1 · legal to compound
Round 1 · Jul 23–24, 2026

The seven peptides at this hearing

The FDA's own briefing documents had recommended against adding all seven, citing incomplete characterization, little or no human efficacy data, and unresolved immunogenicity concerns. The committee overruled them and recommended six of the seven. Only DSIP was voted down. Each is marked below, linked to our full breakdown.

Round 2 · By end of Feb 2027

The next round, and a separate GHK-Cu review

A second PCAC meeting is scheduled before the end of February 2027 for the remaining peptides taken off the restricted list, and GHK-Cu gets its own separate evaluation. The FDA has not posted briefing documents or an exact date for these yet, so there is no forecast to give. We track them here and update the moment there is real news.

LL-37 guide cover
LL-37Feb 2027
Review pending
View guide →
Dihexa guide cover
DihexaFeb 2027
Review pending
View guide →
Melanotan II guide cover
Melanotan IIFeb 2027
Review pending
View guide →
PEG-MGF guide cover
PEG-MGFFeb 2027
Review pending
View guide →
GHK-Cu guide cover
GHK-CuFeb 2027
Separate review
View guide →
An additional peptide, not yet named, expected in the February 2027 review
One more expectedFeb 2027
Not yet named
Confirmed when the FDA lists it
What a vote actually means A PCAC recommendation is advisory and non-binding. Even a favorable vote would not, by itself, make a peptide legal to compound. The FDA still has to run formal rulemaking, which can take a year or more, before anything reaches Category 1. And Category 1 is an enforcement position, not a drug approval. Nothing here is medical or legal advice.
Get the verdict when it lands
The library

Honest peptide guides

Deep, plain-English guides across recovery, performance, longevity, and beauty. New titles added every week.

Founding readers: your discount is applied automatically, no code needed.

BPC-157 recovery peptide guide, evidence-first ebook by Peptide Navigator
The Recovery Peptide

BPC-157

The most-studied recovery peptide. Strong animal data on healing and repair, with human evidence still catching up.

$19$16.99 Get the guide

Founding price, discount applied automatically

TB-500 repair peptide guide, evidence-first ebook by Peptide Navigator
The Repair Peptide

TB-500

A tissue-repair peptide often discussed alongside BPC-157. What the research shows, and where it stops.

$19 Coming soon
KPV gut-calm peptide guide, evidence-first ebook by Peptide Navigator
The Gut-Calm Peptide

KPV

A peptide studied for gut health, inflammation, and barrier support. Under FDA review now. What the evidence shows, plainly.

$19 Coming soon
PEG-MGF muscle repair peptide guide, evidence-first ebook by Peptide Navigator
The Muscle Repair Peptide

PEG-MGF

A growth factor variant studied for muscle repair. The honest evidence picture, in plain English.

$19 Coming soon
Thymosin Alpha-1 immune peptide guide, evidence-first ebook by Peptide Navigator
The Immune Peptide

Thymosin Alpha-1

An immune-modulating peptide with real clinical history in specific uses. What is established and what is not.

$19 Coming soon
LL-37 cathelicidin peptide guide, evidence-first ebook by Peptide Navigator
The Defense Peptide

LL-37

An antimicrobial peptide the body makes itself. What researchers are actually studying it for.

$19 Coming soon
CJC-1295 growth peptide guide, evidence-first ebook by Peptide Navigator
The Growth Signal Peptide

CJC-1295

A growth-hormone-releasing peptide. How it is studied, and the questions that remain.

$19 Coming soon
Ipamorelin growth hormone peptide guide, evidence-first ebook by Peptide Navigator
The Gentle Growth Peptide

Ipamorelin

Often paired with CJC-1295 in the literature. A plain look at the evidence and the caveats.

$19 Coming soon
Sermorelin GH-support peptide guide, evidence-first ebook by Peptide Navigator
The GH-Support Peptide

Sermorelin

One of the older growth-hormone-releasing peptides, with a real clinical background. The honest summary.

$19 Coming soon
MK-677 ibutamoren guide, evidence-first ebook by Peptide Navigator
The Oral GH Booster

MK-677

Technically a compound, not a peptide, but grouped here for how it is used. What the human data says.

$19 Coming soon
Tesamorelin FDA-approved GH peptide guide, evidence-first ebook by Peptide Navigator
The Approved GH Peptide

Tesamorelin

One of the few peptides here with FDA-approved use. What that approval covers, and what it does not.

$19 Coming soon
GHK-Cu copper peptide guide for skin and hair, evidence-first ebook by Peptide Navigator
The Beauty Peptide

GHK-Cu

A copper peptide popular in skin and hair products. What the cosmetic science actually supports.

$19 Coming soon
Melanotan II tanning peptide guide, evidence-first ebook by Peptide Navigator
The Tanning Peptide

Melanotan II

Studied for pigmentation. A candid look at the evidence and the real safety questions.

$19 Coming soon
Epitalon longevity peptide guide, evidence-first ebook by Peptide Navigator
The Longevity Peptide

Epitalon

A peptide tied to longevity research, mostly from a single research lineage. What to make of it, honestly.

$19 Coming soon
Longevity peptides guide, evidence-first ebook by Peptide Navigator
The Aging-Research Guide

Longevity Peptide

A plain-English guide to the peptides most discussed in longevity circles, and what the evidence supports.

$19 Coming soon
AOD-9604 fat-loss peptide guide, evidence-first ebook by Peptide Navigator
The Fat-Loss Fragment

AOD-9604

A growth-hormone fragment studied for fat metabolism. What early research showed, and its limits.

$19 Coming soon
MOTS-c metabolic peptide guide, evidence-first ebook by Peptide Navigator
The Metabolic Peptide

Mots-C

A mitochondrial-derived peptide studied for metabolism. The honest state of the evidence.

$19 Coming soon
Semax nootropic focus peptide guide, evidence-first ebook by Peptide Navigator
The Focus Peptide

Semax

A nootropic peptide with a research history mostly outside the US. What is known and what is not.

$19 Coming soon
Selank calm anxiety peptide guide, evidence-first ebook by Peptide Navigator
The Calm Peptide

Selank

Studied for anxiety and calm. A plain look at the evidence base and where it is thin.

$19 Coming soon
Dihexa cognitive peptide guide, evidence-first ebook by Peptide Navigator
The Cognitive Peptide

Dihexa

Studied for memory, focus, and neuroplasticity. Under FDA review. What the evidence supports, and what it does not.

$19 Coming soon
DSIP Emideltide sleep peptide guide, evidence-first ebook by Peptide Navigator
The Sleep Peptide

DSIP

Delta sleep-inducing peptide. What the sleep research actually shows, without the hype.

$19 Coming soon
PT-141 bremelanotide libido peptide guide, evidence-first ebook by Peptide Navigator
The Libido Peptide

PT-141

Studied for sexual function, with an FDA-approved relative. The honest breakdown.

$19 Coming soon
The APEX Stack recovery and performance peptide guide, evidence-first ebook by Peptide Navigator
Recovery, Growth and Performance

The APEX Stack

A combined guide to the peptides most discussed together for recovery and performance. Evidence-first, no hype.

$21 Coming soon
The Clarity Stack focus and calm peptide guide, evidence-first ebook by Peptide Navigator
Focus, Calm and Cognition

The Clarity Stack

A guide to the cognitive and calm peptides, examined together. What the research supports.

$21 Coming soon
The Overnight Stack sleep and recovery peptide guide, evidence-first ebook by Peptide Navigator
Sleep and Recovery

The Overnight Stack

The peptides discussed for sleep and overnight recovery, in one honest guide.

$21 Coming soon
The Preservation Stack longevity peptide guide, evidence-first ebook by Peptide Navigator
Longevity and Aging

The Preservation Stack

A combined look at the peptides most talked about for longevity and preservation.

$21 Coming soon
The Regeneration Stack tissue repair peptide guide, evidence-first ebook by Peptide Navigator
Repair and Renewal

The Regeneration Stack

The repair and regeneration peptides, examined together with the real evidence.

$21 Coming soon
The Metabolic Stack fat-loss and metabolism peptide guide, evidence-first ebook by Peptide Navigator
Metabolism and Body Composition

The Metabolic Stack

A combined guide to the metabolic peptides. What is supported, and what is still open.

$21 Coming soon
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Independent
No brand pays to appear here. No affiliate sales codes.
Evidence-first
Animal data and human data, told apart honestly.
Plain English
Written to inform, not to impress or to sell a molecule.