For research and educational use. PepCaddie does not sell peptides and recommends no doses.
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Illustration of a peptide vial teed up at the bottom of a golf fairway, with a dotted path past chart, calendar, and syringe markers leading up to a flag on the green.
A free tool. We don't sell peptides.

Your caddie for the peptide journey.

Navigate the peptide space with clarity, confidence, and a plan that fits you.

Calculate your first dose

PepCaddie is a free reference and calculation tool for people working through a first vial. It does the reconstitution arithmetic on the numbers you enter, lays out a weekly schedule you control, and keeps a plain-language reference library with the sources behind it. There is no account, and nothing is for sale.

  • Free to use, no accounts
  • Every tool is editable
  • Plain answers, not marketing

Tools and guides

  • Peptide reconstitution calculatorWork out the concentration in a reconstituted vial and what it means on the syringe.
  • How to reconstituteWhat it means to reconstitute peptides: mixing a freeze-dried powder with a sterile diluent, and what the concentration math does and does not tell you.
  • How to injectWhat subcutaneous injection means, the terms you will meet on a syringe, and why the technique itself is a conversation for a qualified clinician.
  • How to read a COAHow to read a peptide COA: what a Certificate of Analysis reports, which sections matter, and what a missing or mismatched one tells you about a seller.
  • All guidesReconstitution, injection basics, and how to read a certificate.

Peptide reference library

Every compound below has a sourced page: what it is, where it stands with regulators, and what the published research does and does not show. Browse the full library.

  • BPC-157A 15-amino-acid fragment from gastric juice, studied for tissue repair.
  • TirzepatideAn FDA-approved dual GIP/GLP-1 agonist for diabetes and weight.
  • RetatrutideAn investigational triple-hormone agonist posting the biggest weight-loss numbers yet.
  • TesamorelinAn FDA-approved GHRH analog that selectively cuts visceral fat.
  • TB-500A thymosin beta-4 fragment studied for whole-body tissue repair.
  • GHK-CuAn injectable copper tripeptide studied for skin, collagen, and repair.
  • Melanotan IIAn alpha-MSH analog for tanning, with libido and appetite effects.
  • IpamorelinA selective growth-hormone releaser with a clean side-effect profile.
  • KPVA three-amino-acid alpha-MSH fragment studied for gut and skin inflammation.
  • MOTS-cA mitochondrial-derived peptide studied for metabolism and exercise.
  • NAD+A coenzyme every cell uses for energy, injected for metabolism and aging.
  • Glow BlendA combo of BPC-157, TB-500, and GHK-Cu marketed for skin.
  • KLOW BlendGlow Blend plus KPV: GHK-Cu, BPC-157, TB-500, and KPV in one vial.
PepCaddie

Carries the bag. You make every call.

PepCaddie is a free reference tool. It does not sell peptides and recommends no doses. Some supply links are affiliate links. The calculators do arithmetic on the values you enter. Nothing here is medical, legal, or dosing advice, and none of it has been evaluated by the FDA. Consult a qualified professional before making decisions about your health.