Reconstitution calculator
Vial, water and dose in; exact units to draw, concentration and doses-per-vial out. The optimizer lands you on a clean tick.
Research peptide companion · free
Every peptide protocol, measured to the unit.
PepSqueak does the reconstitution math, builds your protocol, tracks your progress, and reminds you when a dose is due. Straight-faced where it counts, free to use, no signup to look around.
Free to use
Runs in your browser
100+ peptides
// The mouse ran the numbers. You just draw the line.
9:415G ▪ 100%
PepSqueak
TUESDAY, JULY 14
Good morning, Alex
Day 1 of your protocol
2 due
14 streak
90% 30d
UP NEXT
DUE NOW · 8:00 AM
Retatrutide
7.5units to draw
✓ Log this dose
HomeBuildTrackTools
For research use only
Education and research for human restoration and optimization, kept 100% free. If PepSqueak helps you, please consider supporting us.
DonateProtocol builder
Don't just dose one peptide. Build the whole stack.
Tell PepSqueak your goal and it assembles a complete protocol, which peptides to run together, how much of each, and exactly when to take them across the week. Suggested stacks are built from commonly cited research pairings, then it does the reconstitution math for every vial in the stack at once.
Suggested stacks
Goal-based pairings, recovery, GH pulse, fat-loss, with the science behind each pick.
Dosing per peptide
Exact units and mg for every vial in the stack, recalculated at your mix.
Weekly schedule
Which day, which peptide, AM or PM, laid out and synced to reminders.
Titration built in
Ramp doses week over week; the stack updates automatically.
// One goal in, a full week of draws out.
SUGGESTED STACK
Recovery & repair
BPC-15725 units
250 mcg · once daily AM · SubQ
TB-50040 units
2 mg · Mon & Thu · SubQ
THIS WEEK
M2
T1
W1
T2
F1
S1
S0
Save stack & set reminders
Body weight−6.4 lb
Last 30 days
↑ dose increase · day 15
BEFORE · Mar 14
AFTER · May 2
Illustrative example · not an actual user · self-reported data, results vary · not medical advice
Progress
Watch the protocol actually work.
Log weight, body-fat, sleep, energy, mood, whatever you care about, and see it trend against your protocol changes. Add before/after photos to a private timeline that stays on your own device.
Trend charts
With protocol-change event markers.
Before / after photos
Private, and kept on your device.
10+ metrics + custom
Weight, sleep, energy, focus, mood…
Adherence streak
On-time % over the last 30 days.
// Two weeks, not one missed. The mouse is quietly impressed.
Everything but the cheese
Everything the protocol needs, in one place.
// Built by humans. Supervised by one very particular mouse.
Protocol builder
Pick a goal and PepSqueak assembles the whole stack, suggested pairings, dose for each peptide, and a weekly schedule.
Titration schedules
Ramp a dose from start to target across 2–12 weeks. Every week's units are recalculated at your current mix.
Progress tracking
Log weight, energy, sleep and more, and watch it trend against protocol changes, with private before/after photos.
Peptide dictionary
100+ research peptides and popular blends, each with category, typical dose and a plain-language note. Searchable.
Dose reminders
Push when a dose is due, on your lead time. Injection sites rotate through eight positions automatically.
Reconstitution · worked examples
Stop guessing at the syringe.
Enter your vial, bacteriostatic water and target dose, and PepSqueak returns the exact units to draw, the concentration, and how many doses are left. Here are three worked examples so you can see exactly what comes out — then run your own numbers in the app, free and with no signup.
Exact units to draw
Per-injection volume and syringe units, live.
Reconstitution optimizer
Finds the cleanest water-to-tick ratio.
U-100 / U-50 / U-40
Whatever barrel you actually own.
Doses & shelf life
Doses per vial and days until it expires.
// Measure twice, draw once.
Worked example
Common range 250–500 mcg per dose, injected SubQ. This worked example uses a 5 mg vial at 250 mcg.
Vial amount
5mg
Bac. water
2mL
Desired dose
250mcg
Draw to
10.0units
0.100 mL
per injection
0255075100u · 1mL
Concentration
2.50 mg/mL
Doses per vial
20 shots
Usually started at 0.25 mg/week and titrated slowly over months. Shown here on a 3 mg vial with 1.5 mL of water.
Vial amount
3mg
Bac. water
1.5mL
Desired dose
0.25mg
Draw to
12.5units
0.125 mL
per injection
0255075100u · 1mL
Concentration
2.00 mg/mL
Doses per vial
12 shots
Commonly started at 2.5 mg/week and titrated. Shown here on a 10 mg vial with 2 mL of water.
Vial amount
10mg
Bac. water
2mL
Desired dose
2.5mg
Draw to
50.0units
0.500 mL
per injection
0255075100u · 1mL
Concentration
5.00 mg/mL
Doses per vial
4 shots
These are worked examples. Want to try the real calculator?
Try it with your own numbersFor research use only · commonly cited ranges, not a prescription
Try it, right here
Search 100+ peptides.
A reference for every research peptide PepSqueak supports, category, typical dose, and a plain-language note on each. The most-searched few show below; start typing or tap a category to reach all of them.
Where the peptides come from
Where we get our peptides.
PepSqueak is the tool, not the supplier, so we work with two partners we trust. Go the clinician-guided route for personal use, or research-grade for the lab. You decide what fits.
For human use
Physician-guided telehealth platform for those seeking human-use protocols.
If you've been masquerading as a mouse and really want a protocol for your own body, human use belongs with a physician. Renoja Bio is a physician-guided telehealth clinic, and you can talk to a specialist before you commit to anything.
More than peptides
Peptides for optimization and performance. Recovery, energy, body composition, cognition and healthy aging.
Hormones. Lab-guided hormone therapy for men and women.
Medical weight loss. Metabolic programs, from a habit reset to full GLP-1 medication support.
For your research mice
Our research-peptide flock: buyers who flock together to test more and pay less.
Here's how it works: the flock pools its orders, so the cost of extra independent lab testing is spread across everyone. You get more rigorous testing than you could justify buying alone, plus a better price. Every batch is verified before you pay, then shipped clean and well-handled.
Third-party testing. An independent US lab tests every flock order for identity and purity, never the seller.
Certificate of analysis. A recent COA that matches the exact batch you're buying, not a generic one.
Transparency. Clear labeling of contents, storage, and honest limits on what's known.
Disclaimer — PepSqueak is free to use. If you're getting value from it, consider supporting us by donating directly or visiting one of our sister companies above.
Questions
Before you dive in.
Yes. The calculator, dictionary, protocol builder and tracker are all free. We keep it that way to support the education and research behind what many are calling Healthcare 3.0. If you love the app, a donation is always appreciated, but never required.
Not to look around, you can use most features as a guest. To track and store your results, sync across devices and get dose reminders and notifications, you'll want a free account.
No, PepSqueak is the tool, not the supplier. When you need a vial we point you to the right door: a licensed clinician and compounding pharmacy for human use, or a vetted research-grade lab (COA per lot, for research use only). The app itself is free and never requires a purchase.
No. PepSqueak is an educational reference for research use. Suggested ranges are commonly cited figures, not a prescription, and the app does not diagnose or prescribe. Consult a licensed clinician.
Over 100 research peptides ship in the dictionary, from BPC-157 and TB-500 to the GLP-family, growth-hormone secretagogues, longevity and cosmetic peptides, plus a custom entry for anything else. The dictionary shows the most-searched few by default; search to reach the rest.
Yes. PepSqueak runs in the browser, so you can add it to your home screen and it opens full-screen like a native app. On iPhone: open the app in Safari, tap the Share button, then "Add to Home Screen." On Android: open it in Chrome, tap the three-dot menu, then "Add to Home screen" (or tap the "Install app" prompt). The icon lands on your home screen and launches straight into the app.
Your log and progress photos belong to you. With an account they sync to your profile only; the app trends what you enter and never shares or interprets it. Progress photos stay on your device and are never uploaded.
Contact
Talk to a human (and one mouse).
Questions, partnership ideas, or a bug to report? Drop us a line and we'll get back to you.
Contact
Talk to a human (and one mouse).
Message ready to send.
Your email app should have opened with everything filled in. Hit send there and we'll take it from the mouse.
Ready to measure twice?
Open PepSqueak in your browser, free, and no account needed to look around.
PepSqueak is free, and donations are hugely appreciated. As we add features, they're what let us keep the whole app free for educational use.