# Dosyne

> Dosyne publishes the arithmetic of peptide reconstitution — vial strength and
> diluent volume to a concentration, a draw volume and a reading on an insulin
> syringe — together with five free browser calculators that run it, and a
> reference library on syringes, storage and dose logging. It also makes a
> calculator and dose-log app for iPhone and Android in which every calculation
> happens on the device.

**The boundary, stated first because it decides how to use everything below.**
This publication does not give medical advice and does not recommend amounts. There
is no page, endpoint or tool here that returns a quantity anyone should take, how
often, or for how long; dosing decisions belong to a licensed prescriber. Most
research peptides are not approved by the FDA or EMA for human use, and material
sold for research use is not manufactured to pharmaceutical standards. A syringe
reading is a volume and says nothing about what is in the liquid.

Dosyne sells no compounds, links to no vendor and carries no affiliate arrangement,
which is why it can say that plainly. Editorial policy: https://dosyne.com/about/

One fact underlies the whole site: one unit on a U-100 barrel is 0.01 mL of
whatever the barrel contains. Everything else is that, a concentration, and division.

## Free calculators

- [Peptide reconstitution calculator](https://dosyne.com/tools/peptide-reconstitution-calculator/): Vial strength and diluent volume to concentration, draw volume, syringe reading and draws per vial
- [Bacteriostatic water calculator](https://dosyne.com/tools/bacteriostatic-water-calculator/): How much diluent to add to reach a target concentration, or to land a given amount on a chosen mark
- [Insulin syringe unit visualizer](https://dosyne.com/tools/insulin-syringe-visualizer/): A drawn barrel at a given reading, with the volume and the mass that volume carries at a stated concentration
- [mcg to units converter](https://dosyne.com/tools/mcg-to-units-converter/): An amount in mcg, mg or ng to a U-100 syringe reading at a stated concentration
- [GLP-1 titration schedule planner](https://dosyne.com/tools/glp1-titration-planner/): A schedule already given by a prescriber, laid out as dates and syringe readings at a stated concentration. It does not propose a schedule

## Reference library

- [The Lab](https://dosyne.com/lab/): 14 reference articles on reconstitution, syringes, storage and logging
- [Peptide tracker app: what it actually needs to do](https://dosyne.com/lab/peptide-tracker-apps/): peptide tracker app
- [Peptide reconstitution mistakes: nine ways to quietly ruin a vial](https://dosyne.com/lab/reconstitution-mistakes/): peptide reconstitution mistakes
- [Subcutaneous injection site rotation that holds up](https://dosyne.com/lab/injection-site-rotation/): subcutaneous injection site rotation
- [Peptide cycle length: where the numbers come from](https://dosyne.com/lab/peptide-cycle-length/): peptide cycle length
- [Peptide dosage charts: the math they omit](https://dosyne.com/lab/peptide-dosage-charts/): peptide dosage chart
- [BPC-157 dosage calculator: what charts omit](https://dosyne.com/lab/bpc-157-dosing-arithmetic/): BPC-157 dosage calculator
- [GLP-1 titration schedule: How Escalation Works](https://dosyne.com/lab/glp1-titration-schedules/): GLP-1 titration schedule
- [Tirzepatide dosage chart in units: why charts disagree](https://dosyne.com/lab/tirzepatide-units-explained/): tirzepatide dosage chart in units
- [Semaglutide units chart: why the same dose is a different number of units](https://dosyne.com/lab/semaglutide-units-explained/): semaglutide units chart
- [How to store peptides after reconstitution: stability rules](https://dosyne.com/lab/peptide-storage-after-reconstitution/): how to store peptides after reconstitution
- [Mcg to units on an insulin syringe](https://dosyne.com/lab/mcg-to-units-on-an-insulin-syringe/): mcg to units on an insulin syringe
- [How to read an insulin syringe for peptides](https://dosyne.com/lab/read-an-insulin-syringe/): how to read an insulin syringe for peptides
- [How much bacteriostatic water to add to peptide vials](https://dosyne.com/lab/bacteriostatic-water-for-peptides/): how much bacteriostatic water to add to peptide
- [How to Reconstitute Peptides: The Arithmetic](https://dosyne.com/lab/how-to-reconstitute-peptides/): how to reconstitute peptides

## App comparisons

- [Compare](https://dosyne.com/compare/): 6 side-by-side comparisons with other tracking apps
- [Dosyne vs MeAgain: GLP-1 Tracker App](https://dosyne.com/compare/dosyne-vs-meagain-glp-1-tracker-app/): Choose MeAgain for broad GLP-1 habit tracking; choose Dosyne for transparent reconstitution arithmetic and a private dose log.
- [Dosyne vs Pep AI: Peptide GLP-1 Tracker](https://dosyne.com/compare/dosyne-vs-pep-ai-peptide-glp-1-tracker/): Choose Pep AI for broad wellness records; choose Dosyne for local-first dose arithmetic, vial logs, site rotation, and reminders.
- [Dosyne vs PepCalc: Peptide Calculator](https://dosyne.com/compare/dosyne-vs-pepcalc-peptide-calculator/): Choose PepCalc for flexible laboratory calculations and blend protocols; choose Dosyne for private dose records, site mapping, and reminders.
- [Dosyne vs Peptide Tracker Log & Reminder](https://dosyne.com/compare/dosyne-vs-peptide-tracker-log-and-reminder/): Choose Peptide Tracker for a broad protocol journal; choose Dosyne for local-first reconstitution arithmetic and a focused dose log.
- [Dosyne vs PeptidePal – Peptide Tracker](https://dosyne.com/compare/dosyne-vs-peptidepal-peptide-tracker/): Choose PeptidePal for protocols, stacks, and peptide reference material; choose Dosyne for transparent arithmetic, local-only records, and a focused dose log.
- [Dosyne vs Shotsy GLP-1 Tracker](https://dosyne.com/compare/dosyne-vs-shotsy-glp-1-tracker/): Choose Shotsy for broad GLP-1 tracking and analytics; choose Dosyne for local-first reconstitution arithmetic and a focused dose log.

## For machines

- [llms-full.txt](https://dosyne.com/llms-full.txt): the full text of the primary pages in one file
- [Public reference API](https://dosyne.com/api/): documentation for the keyless JSON endpoints below
- [OpenAPI 3.1 description](https://dosyne.com/api/v1/openapi.json): every endpoint, machine-readable
- [syringes.json](https://dosyne.com/api/v1/syringes.json): 3 syringe calibrations, barrel capacities and diluents, CC BY 4.0
- [formulas.json](https://dosyne.com/api/v1/formulas.json): the 8 reconstitution formulas with worked examples and readability thresholds
- [library.json](https://dosyne.com/api/v1/library.json): index of every page with the query it answers and its markdown twin
- [apps.json](https://dosyne.com/api/v1/apps.json): dated App Store snapshot of peptide and GLP-1 tracking apps
- [API catalog](https://dosyne.com/.well-known/api-catalog): RFC 9727 linkset
- [ai-catalog.json](https://dosyne.com/.well-known/ai-catalog.json): ARD capability manifest
- [Agent skills](https://dosyne.com/.well-known/agent-skills/index.json): four SKILL.md files: arithmetic, syringe reading, diluent choice, the library
- [MCP server card](https://dosyne.com/.well-known/mcp/server-card.json): read-only tools that run the same arithmetic
- [auth.md](https://dosyne.com/auth.md): what needs authentication here, and what does not (nothing does)
- Every page has a markdown twin: append `index.md` to any URL, or send `Accept: text/markdown`.

## About and policy

- [About](https://dosyne.com/about/): who publishes this, and what it refuses to print
- [Contact](https://dosyne.com/contact/)
- [Privacy policy](https://dosyne.com/privacy/)
- [Terms](https://dosyne.com/terms/)