Trusted resources

Short notes on pages we would send a reader to anyway, whether or not they ever link back. Nobody pays to be here, and nothing here sells peptides or points to where to buy them. If you run a page that belongs on this list, write to [email protected]; we add it only after reading it.

Dosing errors and medication safety

• FDA: concerns with unapproved GLP-1 drugs used for weight loss
  The regulator's own statement on compounded and unapproved GLP-1 products, including reports of dosing errors. Read it before you trust any vial maths, ours included.
• ECRI: common medication errors with GLP-1 therapies
  A patient-safety nonprofit's list of the errors that actually happen. It names the mg-versus-units mismatch, which is the step our calculators exist to check.
• Diabetes Education Services: insulin and diabetes medication PocketCards
  Quick-reference cards that diabetes educators keep on hand. Good for the insulin and syringe basics, written for clinicians and patients rather than for vial mixing.

GLP-1 patient education and muscle

• Diabetes Strong: everything you need to know about Ozempic
  A medically reviewed patient guide to prefilled Ozempic pens: the strength chart, the usual titration steps, missed doses and storage. It covers pens, not vials, so use it for the licensed product and our calculators for anything you mix.
• Barbell Medicine: does GLP-1 weight loss cause disproportionate muscle loss?
  A physician-written, heavily referenced argument that most of the lean-mass drop reflects water, glycogen and fat rather than muscle, with resistance training as the lever. The site is a coaching business, so expect its own products on the page.

Reconstitution and bacteriostatic water

• PeptideJournal: how to use bacteriostatic water for peptides
  An educational walk-through of the concentration formula and a reference table. It is the same maths as our reconstitution calculator, written out in prose.

Evidence

• Literature and patent review of BPC-157 (PubMed Central)
  A peer-reviewed review of what has and has not been shown for BPC-157. It states that human clinical evidence is limited, which is the right starting point for any compound on this site.

From us

• How to read an insulin syringe
  U-100 versus U-40 and the 2.5x error.
• Methodology
  Every formula and rounding rule, so you can check the maths by hand.
• Embed the calculator
  Free for blogs, clinics and newsletters, credit link only.

All calculators and charts

Weight management (GLP-1 family)

• Retatrutide calculator Vial, water and weekly dose to syringe units
• Tirzepatide calculator The 2.5 to 15 mg ladder, converted
• Semaglutide calculator The 0.25 to 2.4 mg ladder, converted
• Cagrilintide calculator Amylin analogue, 0.3 to 4.5 mg weekly

Growth hormone axis

• HGH (somatropin) calculator IU vials to syringe units
• Ipamorelin calculator mcg doses, in mL and units
• CJC-1295 (no DAC) calculator No-DAC and DAC, mcg to units
• CJC-1295 / Ipamorelin blend calculator The 5 mg + 5 mg blend, per component
• Sermorelin calculator Nightly mcg doses to units
• Tesamorelin calculator 1 to 2 mg daily, in units
• Hexarelin calculator mcg doses to units
• IGF-1 LR3 calculator Tens of mcg from very small vials
• AOD-9604 calculator 300 mcg daily, in units
• MOTS-c calculator 5 to 10 mg, two or three times a week

Repair, skin and blends

• BPC-157 calculator mcg doses from a 5 or 10 mg vial
• TB-500 calculator Loading and maintenance, in units
• BPC-157 / TB-500 blend calculator The Wolverine stack, per component
• GHK-Cu calculator 50 to 200 mg vials, mg doses
• GLOW blend calculator The 70 mg blend, split per component
• KLOW blend calculator The 80 mg blend, split per component

Other compounds

• PT-141 calculator 0.5 to 2 mg, as needed
• Melanotan II calculator mcg loading doses to units
• NAD+ calculator 100 to 1,000 mg vials, 25 to 200 mg doses
• Thymosin alpha-1 calculator 1.6 mg twice weekly, in units
• Epitalon calculator Short courses of 5 to 10 mg
• Kisspeptin-10 calculator mcg doses to units
• Glutathione calculator Hundreds of mg, or a 200 mg/mL solution

Dosage charts and schedules

• Peptide reconstitution chart Concentration for every vial and water combination
• Peptide dosing chart Printable unit tables for every compound
• Retatrutide titration schedule 2 to 12 mg in units, stage by stage
• Tirzepatide titration schedule 2.5 to 15 mg in units, stage by stage
• Semaglutide titration schedule 0.25 to 2.4 mg in units, stage by stage
• KLOW dosage and frequency chart The 80 mg blend at 2, 3 and 4 mL, both phases
• GLOW dosage chart The 70 mg blend, units to each peptide
• Wolverine stack dosing chart BPC-157 + TB-500, blend and separate vials
• MOTS-c dosage chart 5 and 10 mg vials at three water volumes
• Tirzepatide reconstitution chart Every vial size, every water volume, the whole ladder
• Retatrutide dosing chart 1 to 12 mg across 10, 20 and 30 mg vials
• Tirzepatide units to mg chart Both directions, every vial and water volume
• Semaglutide units to mg chart The dosage chart in units, both directions
• NAD+ injection dosage chart Per day, per week and frequency, 100 to 1,000 mg vials
• Tesamorelin dosage chart 2, 5 and 10 mg vials, 0.5 to 2 mg in units
• BPC-157 dosage chart mcg doses from 5 and 10 mg vials, four water volumes
• PT-141 dosage chart The 10 mg vial, 0.5 to 2 mg, with uses per vial
• Sermorelin dosage chart Nightly mcg doses from 5, 10 and 15 mg vials
• Printable dosing charts Four one-page charts to save, pin or print
• Peptide storage chart How long powder and mixed vials last, fridge to freezer

Tools

• Peptide calculator The general tool, any compound
• Reconstitution calculator How much water to add, and why it matters
• Bacteriostatic water calculator Pick a volume that lands where you can read it
• How to read an insulin syringe U-100 vs U-40, and the 2.5x error
• The Protocol Pack Free 25-page printable reference
• mg to units calculator Both directions, any concentration, with the reference tables
• 1 mg to units on an insulin syringe The conversion table for every common concentration
• Units to mg calculator The mark you drew, back into milligrams
• 0.5 mg to units on an insulin syringe 0.5 mg at every common vial and water volume
• 1.5 mg to units on an insulin syringe 1.5 mg at every common vial and water volume
• 2.4 mg to units on an insulin syringe 2.4 mg at every common vial and water volume
• 3 mg to units on an insulin syringe 3 mg at every common vial and water volume
• 4 mg to units on an insulin syringe 4 mg at every common vial and water volume
• 2 mg to units on an insulin syringe 2 mg at every common vial and water volume
• 2.5 mg to units on an insulin syringe 2.5 mg at every common vial and water volume
• 5 mg to units on an insulin syringe 5 mg at every common vial and water volume
• 10 mg to units on an insulin syringe 10 mg at every common vial and water volume
• 12 mg to units on an insulin syringe 12 mg at every common vial and water volume
• 15 mg to units on an insulin syringe 15 mg at every common vial and water volume
• Methodology Every formula, assumption and rounding rule
• About Peptulator Who publishes it, independence and contact
• Embed the calculator Free widget for blogs, clinics and newsletters, credit link only