Skip to content
Peptifacts

Peptides, explained simply

Overwhelmed by peptides? Let’s make it simple.

Start here

Three taps to your shortlist. Education, not medical advice.

Most popular.

All 255

Start with the essentials.

Three short ideas that make every peptide page easier to read.

  1. 01
    GlyGluProProProGlyLysEACH BEAD = ONE AMINO ACIDBPC-157 HAS 15 BEADSONE BOND

    What is a peptide?

    Chains of amino acids. Some carry signals between cells.

    Meet the building blocks
  2. 02
    GIPGLP-1GLUCAGONSemaglutide1Tirzepatide2Retatrutide3

    Single, dual and triple agonists

    Semaglutide (Ozempic, Wegovy) works on 1 receptor, tirzepatide (Mounjaro, Zepbound) on 2, retatrutide on 3. Retatrutide is still in trials.

    See the weight-loss peptides
  3. 03
    WeightSemaglutide · TirzepatideRecoveryBPC-157 · TB-500MuscleIpamorelin · CJC-1295SkinGHK-Cu · Melanotan IIBrainSemax · SelankSleepDSIP · Ipamorelin

    The other kinds

    Beyond weight loss there are recovery, muscle, skin, brain and sleep peptides. Here are names people know in each.

    Video coming soonBrowse every peptide

Questions people ask us.

What’s the difference between BPC-157 and TB-500?

BPC-157 is an experimental repair peptide with mostly animal evidence and a few small human reports. TB-500 is a short piece of thymosin beta-4 with no proven repair benefit in humans. People often take them together as the Wolverine stack. See BPC-157 and TB-500.

Semaglutide, tirzepatide or retatrutide: what’s the difference?

Semaglutide (Ozempic, Wegovy) works on 1 receptor, tirzepatide (Mounjaro, Zepbound) on 2, retatrutide on 3. Semaglutide and tirzepatide are FDA approved; retatrutide is still in trials. Compare semaglutide, tirzepatide and retatrutide.

What are Wolverine, GLOW and KLOW?

Community blends: several peptides in one vial. Wolverine is BPC-157 plus TB-500. GLOW adds GHK-Cu. KLOW is GLOW plus KPV. None of these blends has been tested as a blend in people.

Are peptides FDA approved?

Some are. Semaglutide, tirzepatide and tesamorelin are FDA-approved drugs for specific uses. Many others, like BPC-157 and TB-500, are not approved. Every peptide page shows its status next to the name. Browse them all.

How do I mix a peptide vial?

Swab the stopper, add the water slowly down the glass, swirl (don’t shake) and store it as labelled. The dosing calculator turns your dose into units on a U-100 syringe.

Is this medical advice?

No. Peptifacts is education: reported doses with the evidence next to them. We don’t sell anything and don’t link to sellers. Talk to a clinician before you take anything. How we work.

Just bought a vial?

For lyophilised injectable vials: follow the product's diluent and preparation instructions.

  1. 1Swab the stopperSwab it with alcohol first, every time.
  2. 2Add the water slowlyLet it run down the glass.
  3. 3Swirl, don't shakeSwirl until it dissolves.
  4. 4Store as labelledTemperature and discard time depend on the exact formulation.
Water and units calculator

Vial size (mg) and the water you add (mL) set the strength. The calculator turns your dose into units on a U-100 syringe.

How to mix a peptide vial · 1:11

Every number links to its source. How we work