INDEPENDENT PEPTIDE & GLP-1 EDUCATION

Peptides,
explained properly.

A free reference for peptides and GLP-1s, written with women in mind. Understand the evidence, check the claims, and find better questions for your clinician.

New here? Start with the four-minute guide

Compounds A–Z Compare the evidence Common questions

Look up a compound

How we grade evidence →

Browse every compound A–Z →

One name. Plenty of questions.

Compare the evidence

See every matchup →

The 2am questions

See more questions →

Types of peptides by goal

Weight loss

Semaglutide and tirzepatide have named FDA-approved products. Retatrutide and survodutide remain investigational. AOD-9604 did not establish weight-loss efficacy in its largest reviewed trial.

See weight loss peptides Recovery & healing

BPC-157, TB-500 and KPV are promoted for recovery, but the reviewed evidence does not establish site-targeted healing, a beginner treatment, or a validated combination protocol.

See recovery peptides

Skin, hair & beauty

GHK-Cu has limited, product-specific topical studies; those findings do not establish systemic injections. Melanotan II tanning products are unapproved and carry regulator warnings.

See beauty peptides Longevity

Cell-line telomere findings and biomarker changes do not prove human life extension. Elamipretide has a narrow approved product and indication that does not validate general longevity use.

See longevity peptides Muscle & GH

CJC-1295/ipamorelin is not a validated sleep, recovery, or body-composition stack. Tesamorelin has product-specific approval for excess abdominal fat in adults with HIV-associated lipodystrophy.

See muscle peptides Focus & mood

Selank has a small medazepam-comparator study, not a placebo trial. Semax evidence comes from limited regional neurologic research. Adamax lacks compound-specific human evidence.

See cognitive peptides

Four categories that must not be blurred

An FDA-approved product, a lawful patient-specific compounded preparation, a clinical-trial product, and a grey-market research vial have different evidence, quality controls, instructions, and legal status.

Start with status, not a protocol

01 Unapproved recovery products Animal or mechanistic evidence is not a patient healing protocol. See the matchup 02 Growth-hormone secretagogues Hormone-response studies do not validate a sleep or recovery stack. Compare with Tesamorelin 03 Approved weight-management products Use the exact label and prescriber plan; compounded and investigational products are separate categories. See the matchup

How do peptides work?

A peptide is a short amino-acid chain, but mechanism, absorption, benefit, risk, and route are compound and formulation specific. Cell and animal findings can motivate human research; they cannot be rewritten as demonstrated patient outcomes. Every profile identifies the evidence type and product status.

This compound index includes approved medicines, investigational candidates, preclinical substances, and one non-peptide coenzyme. Inclusion is not endorsement.

Brand new? Start with the 4-minute guide →

What’s in a peptide? A vial and Vialprep’s curious wand.

Watch the 40-second peptide story · No sound.

Read the story

What’s in a peptide?
Peptides are made of amino acids Tiny building blocks your body already uses.
Link them into a short chain. That’s a peptide. Your body makes peptides too.
The chain can bend and fold. It’s still the same chain.
Its shape helps it fit. Like a key fitting a lock.
Your cells have tiny receivers. They’re called receptors. Some peptides attach here.
It attaches. The cell gets a message. That message can change what the cell does.
For example, insulin says: “Let sugar in.” Your cells use that sugar for energy.

Arithmetic after the prescription.

The calculator converts a prescribed dose and verified concentration into volume. It does not choose a drug, dose, diluent, route, schedule, or preparation method.

Open the arithmetic tool

Arithmetic only · verified concentration required

Rx first.
Then calculate.