New to Peptides
The reconstitution math is the part that stops most people. There is a calculator for it.
You receive a vial of lyophilized powder and a vial of bacteriostatic water. How much water you add determines the concentration. The concentration determines how many units to draw per dose. Getting it wrong means you are not taking what you think you are taking.
Protocol handles the math. Enter your vial size and your target dose. The calculator returns the exact BAC water volume and syringe units. The rest — logging, tracking, rotation — follows the same pattern. Specific inputs, clear outputs.
81
compound profiles with dosing guides
Free
to download, no account
14 days
Pro free at install
How most beginners use Protocol
Choose a compound
Protocol's research library has 81 compound profiles. Each one covers what the compound does, the evidence behind it, dosing ranges, and how to reconstitute it. For most beginners, BPC-157 or TB-500 is the starting point. Read the profile before you order anything.
Reconstitute your vial
This is where most beginners get stuck. Open the reconstitution calculator, enter your vial size in milligrams and your target dose in micrograms, and the app tells you how much bacteriostatic water to add and how many units to draw per injection. You do not have to do the math yourself.
Log your first injection
After your first injection, open the app and log it: compound, dose, injection site. The 3D body map marks the zone you used. The vial tracker updates the doses remaining. The timeline starts building. From here, everything is incremental.
Track your vials
Reconstituted peptides have a shelf life. Refrigerated, most last 30-60 days. Protocol's vial tracker logs when you reconstituted, how many doses remain, and flags vials approaching expiry. You will not find out a vial has gone bad by noticing it stopped working.
The reconstitution calculator
The most common beginner mistake is adding the wrong amount of BAC water. A 5mg vial reconstituted with 1mL of water gives a concentration of 5mg/mL. At a dose of 250mcg, you draw 0.05mL — 5 units on a standard insulin syringe. That is not intuitive math, and doing it incorrectly means you are either underdosing significantly or taking more than intended.
Protocol's calculator works in both directions. Forward mode: enter vial size and BAC water volume, get concentration and units per dose. Reverse mode: enter your target dose and the units you drew, verify the concentration you mixed.
The calculator covers 81 compounds. It runs offline. It does not require a Pro subscription.
Try it before you download
The web version of the reconstitution calculator is free at protocolapp.health/tools/reconstitution-calculator. No account, no download required.
The compound research library
Most peptide information online falls into two categories: forum posts from anonymous users or supplement company marketing. Protocol's library is built from published research and regulatory documents.
Each of the 81 compound profiles covers: what the compound does mechanistically, what the evidence shows (and what it does not show), dosing ranges from published protocols, reconstitution guidance, half-life and pharmacokinetics, and current regulatory status. The BPC-157 profile, for example, includes the outcome of the July 2026 PCAC vote — 8-6-1 recommended — which affects how compounding pharmacies can supply it going forward.
When you are deciding whether to try a compound, the library gives you a starting point grounded in actual data. It is not medical advice. It is the research, clearly presented.
No account. No cloud. Your data is yours.
Peptide use occupies an unusual space. The compounds themselves are not illegal. But they exist in a gray area that many users prefer to keep private — from employers, from family members, from anyone who might pick up their phone.
Protocol does not require an account. There is no email sign-up step. No data leaves your device unless you choose to export it. The app stores everything locally using SQLite.
Stealth Mode replaces the Protocol app icon with a generic shield and changes the app name to "Health." The app functions identically either way. It is available on iOS and Android.
Free vs Pro — what beginners actually use
Reconstitution calculator
Most important for beginners
Dose logging
Vial tracking and expiry alerts
3D injection site map
81-compound research library
Apple Health integration
PK curves and Active Levels
More useful once stacking
Stack Score AI analysis
For evaluating combinations
Interaction Checker
Unlimited active protocols
Start with the calculator. Build from there.
Free to download. No account required. Every install gets 14 days of Pro to try the full feature set.
Frequently asked questions
What is the hardest part of starting peptides for most beginners?+
Reconstitution math stops more people than anything else. You receive a lyophilized powder vial and bacteriostatic water. How much water you add determines the concentration, which determines how many units you draw per dose. Getting this wrong means underdosing or overdosing. Protocol's reconstitution calculator handles this step-by-step: enter your vial size and target dose, get the exact BAC water volume and syringe units.
Which peptide should I start with as a beginner?+
BPC-157 is the most common starting point for beginners because it has a wide safety margin, a well-established dosing range (250-500mcg daily), and is typically injected subcutaneously rather than intramuscularly. Protocol's compound library has a full BPC-157 profile including mechanism of action, dosing protocols, reconstitution guide, and regulatory status. TB-500 is also common as a beginner compound, often stacked with BPC-157.
Do I need an account to use Protocol?+
No account, no email, no sign-up required. Download the app and start logging. Everything is stored on your device. You can export your logs as CSV or PDF at any time, but your data never goes to a server.
What does Protocol track for someone just starting out?+
For a beginner, the most useful features are: the reconstitution calculator (handles the math for mixing your vials), the vial tracker (shows how many doses remain and flags expiry), dose logging (records each injection with date, dose, and site), and the compound research library (81 profiles with dosing, mechanism, and evidence summaries). These are all free. Pro features like PK curves and Stack Score become more relevant as your protocol gets more complex.
Is Protocol free for beginners?+
Yes. Core tracking is free: reconstitution calculator, dose logging, vial tracking, injection site map, and compound library. Pro adds AI-powered tools like Stack Score, PK curves, and Interaction Checker at $9.99/month, $59.99/year, or $149.99 lifetime. Every new install gets 14 days of Pro automatically so you can try the full feature set before deciding.
Where does Protocol's compound information come from?+
Protocol's 81-compound research library is built from published research, clinical trial data, and regulatory documents including PCAC (Pharmacy Compounding Advisory Committee) review outcomes. Each profile includes mechanism of action, dosing ranges, reconstitution guidance, half-life, and current regulatory status. The library is updated when new data becomes available — for example, the July 2026 PCAC vote outcomes for BPC-157, TB-500, and several other compounds are reflected in the current registry.