Compounded Semaglutide Tracker
The first companion app built specifically for compounded semaglutide vials. Convert prescribed milligrams directly to syringe units (U-100), track vial beyond-use dates (BUD), and model half-life curves on iOS.
GLPme is the first dedicated tracker engineered specifically for compounded semaglutide from 503A and 503B compounding pharmacies. Say goodbye to dangerous manual math: GLPme converts your prescribed dose in milligrams directly into syringe units on standard U-100 insulin syringes, tracks vial concentrations, alerts you before vial beyond-use dates (BUD), and models active half-life curves on iOS. 100% free and private.
Key takeaways
- Visual syringe unit converter: converts mg to syringe units across all common compounding concentrations (1 mg/mL, 2.5 mg/mL, 5 mg/mL).
- Eliminates the #1 FDA-reported dosing error: confusing syringe units with medication milligrams.
- Vial supply and Beyond-Use Date (BUD) tracker warns you before your compounded vial expires (28 to 90 days).
- Models 7-day elimination half-life curve so you can monitor active steady-state blood levels.
- Zero cloud accounts, zero ads, and 100% on-device private health logging.
The compounded semaglutide dosing trap
In 2024, the FDA issued an urgent alert regarding widespread dosing errors with compounded semaglutide. Patients mistakenly drew 50 units (0.5 mL) thinking it was 0.5 mg, accidentally overdosing by 5x to 10x and suffering severe acute nausea, intractable vomiting, and dehydration requiring emergency department care.
Unlike commercial Ozempic pens that dial clicks, compounded semaglutide arrives as a glass vial paired with disposable U-100 insulin syringes. The number of units you draw depends entirely on the vial's concentration in milligrams per milliliter (mg/mL). GLPme eliminates this confusion: enter your prescribed dose and concentration, and the app visually highlights the exact tick mark on a rendered syringe before you inject.
Visual U-100 syringe conversion
GLPme includes an integrated conversion engine covering all standard compounding formulas:
| Prescribed Dose | 2.5 mg/mL Vial | 5 mg/mL Vial | 1 mg/mL Vial |
|---|---|---|---|
| 0.25 mg | 10 units (0.1 mL) | 5 units (0.05 mL) | 25 units (0.25 mL) |
| 0.50 mg | 20 units (0.2 mL) | 10 units (0.10 mL) | 50 units (0.50 mL) |
| 1.00 mg | 40 units (0.4 mL) | 20 units (0.20 mL) | 100 units (1.00 mL) |
| 1.70 mg | 68 units (0.68 mL) | 34 units (0.34 mL) | Requires 2 syringes |
| 2.40 mg | 96 units (0.96 mL) | 48 units (0.48 mL) | Requires 2 syringes |
You can also verify any dose online using our free semaglutide units calculator.
Vial supply and beyond-use dates (BUD)
Compounded vials do not last forever. Once punctured by a syringe, sterility guidelines generally limit multi-dose vials to 28 days of use (or up to 60–90 days depending on the compounding pharmacy's specific preservative formulation and beyond-use date). GLPme calculates how many doses remain in your vial and warns you before your vial expires or runs dry, avoiding dangerous gaps in treatment.
Active peptide half-life tracking
Compounded semaglutide utilizes the same active peptide backbone as brand-name Ozempic, exhibiting a 7-day elimination half-life. GLPme graphs your active blood levels, helping you track steady-state accumulation through each dose escalation step.
Sources
Every figure on this page traces to one of these. Regulatory documents and peer-reviewed primary research only — see our editorial policy for what we accept as a source.
- FDA Alerts Health Care Providers, Compounders and Patients of Dosing Errors Associated with Compounded Injectable Semaglutide Products. FDA MedWatch, 2024. View source
- Wilding JPH et al. Weight regain and cardiometabolic effects after withdrawal of semaglutide: the STEP 1 trial extension. Diabetes, Obesity and Metabolism, 2022. View source
- Compounded GLP-1s: why doctors worry and the FDA is cracking down. Stanford Medicine, 2026. View source
- GLP-1 Agonists: What They Are, How They Work & Side Effects. Cleveland Clinic. View source
Get GLPme for Compounded Semaglutide
Safely convert mg to units and track multi-dose vials on your iPhone with total privacy.
