The Protocol Pack
Twenty-five pages, written to be printed and kept next to the vial. Free.
Every calculator online answers the question you had before you started. None of them answer that one. Nine of these pages do.
Type your email and the download appears here. We also email you the link, then a few short handling notes and the weekly Dispatch from Peptide Bureau, the team behind Peptulator. No account, one-click unsubscribe. Privacy
What is in it
Part one · Getting it right
- The three-step maths, written out so you can check any calculator by hand, including this one.
- Reconstitution, step by step. Nine steps from room temperature to the fridge, including why you swirl instead of shake and what aggregation actually does to a folded peptide.
- Reading the barrel. The same 0.2 mL drawn to scale on 1 mL, 0.5 mL and 0.3 mL syringes, plus the U-40 trap that turns a correct number into a 2.5x overdose.
- Choosing your water volume, worked backwards from the draw you want.
Part two · When it goes wrong
Five pages. What actually happened, whether it matters, what to do, and the point at which it stops being a maths problem and becomes a phone call.
| You did this | The pack tells you |
|---|---|
| Added too much or too little water | How to recalculate instead of discarding |
| Do not know how much you added | The one honest way to recover the vial |
| Shook it instead of swirling | When it is fine, and when the vial is finished |
| Left it out of the fridge | Overnight versus days, powder versus solution |
| Froze it, or it looks cloudy | What is recoverable and what is not |
| Injected more than you meant to | How to size it, and the symptoms that mean go now |
| Cannot remember whether you dosed | How to settle it from the vial itself |
| Missed a weekly dose, or several | Catch up, skip, or step back down the ladder |
Part three · Print and keep
- Twelve dosing cards, one per compound, each showing every dose at three different water volumes rather than the single setup a website has to pick.
- Three titration planners for retatrutide, tirzepatide and semaglutide, with the units at every stage, a running count of vials used, and a box to tick and date as you go.
- A vial log. One line per dose. This is what stops the doubling-up that causes most of part two.
- An injection site rotation chart, eight zones and six cycles, because rotating sites is what keeps a consistent dose absorbing consistently.
- A fridge-door sheet with the full concentration grid, sized to cut out and stick up.
Why is it free
Because it is worth more to me that you have it. This site carries no ads and no vendor links; it is published by the team behind Peptide Bureau. A reference document that stops someone binning a good vial, or taking a dose they did not mean to, is the best possible argument that the rest of the site is worth trusting.
What it is not
It is not a protocol in the sense of telling you what to take. It contains no dose recommendations, because that is not a thing a document can responsibly do. Dose ranges in it describe what is commonly reported, and the pack says plainly where a compound has never been properly characterised instead of inventing a number. It is a reference for arithmetic and handling, and everything in it assumes you have already made your own decisions with a clinician.
Related calculators and charts
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 (this page)
- 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
- 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
Every one of the 27 compound calculators, charts and tools: the full list.