Cagrilintide Reconstitution Calculator
BAC water, concentration & dose-to-units charts
Work out how much bacteriostatic water to add to a cagrilintide vial and what each weekly dose becomes in syringe units — for example, a 10 mg vial in 2 mL of water is 5 mg/mL, so a 1.2 mg dose is 0.24 mL, or 24 units on a U-100 syringe. Cagrilintide is investigational (studied with semaglutide as CagriSema); this page handles reconstitution math only.
How cagrilintide reconstitution works
Cagrilintide is a long-acting amylin analog supplied as a freeze-dried (lyophilized) powder that you dissolve with bacteriostatic water before measuring a dose. The concentration is the vial strength divided by the water you add — a 10 mg vial in 2 mL is 5 mg/mL.
Like semaglutide, cagrilintide is titrated weekly across a range of doses (commonly studied at 0.3–2.4 mg). Dose volume is the dose divided by the concentration, and on a U-100 insulin syringe that volume × 100 gives the unit marks to draw.
Reconstitution chart: concentration by cagrilintide vial size and water added
| Vial size | +1 mL | +2 mL | +3 mL | +5 mL |
|---|---|---|---|---|
| 5 mg | 5 mg/mL | 2.5 mg/mL | 1.67 mg/mL | 1 mg/mLBest |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL | 2 mg/mL |
Cagrilintide dose to syringe units (by concentration)
| Weekly dose | 1 mg/mL | 2.5 mg/mL | 5 mg/mL |
|---|---|---|---|
| 0.3 mg | 0.3 mL → 30 | 0.12 mL → 12 | 0.06 mL → 6Best |
| 0.6 mg | 0.6 mL → 60 | 0.24 mL → 24 | 0.12 mL → 12 |
| 1.2 mg | 1.2 mL → 120* | 0.48 mL → 48 | 0.24 mL → 24 |
| 2.4 mg | 2.4 mL → 240* | 0.96 mL → 96 | 0.48 mL → 48 |
How to reconstitute a cagrilintide vial
Storage & safety
Bacteriostatic water contains benzyl alcohol as a preservative, so a reconstituted vial can be used for multiple draws; keep it refrigerated and labeled with its concentration and date. If you combine cagrilintide with a separate semaglutide or tirzepatide vial, calculate each peptide’s concentration independently so your unit math stays correct.
This page is educational and only handles reconstitution and unit math. Cagrilintide is investigational, so decisions about whether to use it belong with a qualified healthcare professional, and you should verify any vial’s real content before relying on the label.
Frequently Asked Questions
10 mg in 1 mL is 10 mg/mL; in 2 mL is 5 mg/mL; in 3 mL is about 3.33 mg/mL. A common choice is 2 mL (5 mg/mL), which keeps weekly 0.3–2.4 mg doses inside a single syringe. Use the chart above.
At 5 mg/mL, 1.2 mg is 0.24 mL, or 24 units on a U-100 insulin syringe. At 2.5 mg/mL it is 0.48 mL (48 units). Units = (dose ÷ concentration) × 100.
No. Cagrilintide is the amylin analog on its own; CagriSema is the fixed combination of cagrilintide plus semaglutide. This calculator covers cagrilintide by itself.
Pick one that keeps your weekly dose under 100 units. 5 mg/mL works well across the 0.3–2.4 mg range; lower concentrations make small early doses easier to read.
Yes. Shotlee stores your vial concentration, logs each weekly dose and side effect, and sends reminders so you do not have to recompute. It is free.
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