The operating system for your protocol
The dashboard for your peptide protocol.
Everything you need to run a peptide protocol — track your doses, manage cycles, explore new compounds, and measure what's actually working. All in one place.
No contracts. Cancel anytime.
Built for every stage
Explore. Plan. Track.
Whether you're researching your first compound or running a six-month cycle, PeptideOS meets you where you are.
Explore
Browse 80+ peptides with dosing guides, half-lives, common stacks, side effect profiles, and everything you need to know before starting.
- Dosing ranges & half-lives
- Common stacks & interactions
- Side effects & what to expect
Plan
Build protocols with titration schedules, cycle timing, and stack interactions. Proven templates for weight loss, recovery, cognitive enhancement, longevity, and hormone optimization.
- Titration & ramp schedules
- Cycle & washout planning
- Pre-built protocol templates
Track
Log doses in one tap. Monitor adherence, supply, side effects, weight, labs, and progress photos. See what's working with data — not vibes.
- One-tap dose logging
- Adherence & supply tracking
- Weight, labs & progress photos
Everything your protocol needs.
Six core capabilities, designed to work together.
Peptide library
80+ compounds with dosing ranges, protocols, stacks, and what to expect. Continuously updated.
Smart dose tracking
One-tap logging. Daily, weekly, or custom schedules. Never wonder if you pinned today.
Titration schedules
Pre-built ramp protocols for GLP-1s, growth hormones, and common stacks. Auto-advance through steps at the right pace.
Cycle planning
Plan cycles, washouts, and stacks months in advance. Calendar view shows everything at a glance.
Supply tracking
Know exactly how many days of each compound you have left. Get reminders before you run out.
Progress measurement
Weight, measurements, progress photos, symptoms, and labs — plotted alongside your protocol so you can see what's actually working.
Learn as you go.
A growing library of guides, protocols, and deep dives — written for people who actually want to understand what they're running.
The beginner's guide to peptides
What they are, how they work, and what to know before your first pin.
GLP-1 titration explained
Semaglutide, tirzepatide, retatrutide — dosing schedules, side effects, and how to ramp without getting wrecked.
Building your first stack
How to combine peptides for recovery, cognition, fat loss, or longevity — and what NOT to mix.
Free tools. No signup.
Use these anytime — even without an account.
Reconstitution calculator
Vial strength, BAC water, target dose — get mL per injection and U-100 units.
Dose converter
mg / mcg / IU / units. Convert between common peptide units instantly.
Cycle planner
Visualize cycles and washouts on a simple calendar.
Reconstitution calculator
mg / mLEnter your vial, diluent volume, and target dose.
- Concentration
- 5.000 mg/mL
- Volume per injection
- 0.050 mL
- Insulin syringe (U-100)
- 5.0 units
- Doses per vial
- 40.0
For research record-keeping only. Not medical advice. Verify all calculations independently.
Simple pricing.
Start free. Upgrade when you're ready to run more than two compounds.
Free
- 2 compounds
- Dose tracking
- Reconstitution calculator (unlimited)
- 30 days of history
Pro
- Unlimited compounds & protocols
- Titration & cycle planning
- Full peptide library access
- Supply tracking & reminders
- Progress tracking (weight, photos, labs, symptoms)
- Full history & exports
- Priority support
Why we built PeptideOS.
Peptide protocols have gotten more complex, and the tools haven't kept up. Spreadsheets break. Notes apps get messy. Generic medication trackers weren't built for compounds, cycles, or titrations. PeptideOS is what we wanted for ourselves — a serious tool for people running real protocols. Clean, fast, and built around how you actually use peptides.
— The PeptideOS team
Common questions.
Run your protocol like it matters.
Because it does.
No contracts. Cancel anytime.