Cagrilintide 5 mg Vial: Reconstitution and Dosing Chart
How much bacteriostatic water to add to a 5 mg vial of Cagrilintide, the concentration you get, and a full dose-to-units chart.
- Vial size
- 5 mg
- With 2 mL water
- 2.5 mg/mL
- common choice
- 10 units contain
- 0.25 mg
- at 2 mL, U-100
- Whole vial
- 200 units
- 2 mL on a U-100 scale
How much water to add
Bacteriostatic water only changes the concentration, not the amount of Cagrilintide in the vial. More water means more units per dose (easier to read), less water means fewer.
| Water added | Concentration | 10 units contain | 1 mg is | Whole vial |
|---|---|---|---|---|
| 1 mL | 5 mg/mL | 0.5 mg | 20 u | 100 u |
| 2 mL | 2.5 mg/mL | 0.25 mg | 40 u | 200 u |
| 2.5 mL | 2 mg/mL | 0.2 mg | 50 u | 250 u |
| 3 mL | 1.667 mg/mL | 0.167 mg | 60 u | 300 u |
Calculator and full dosing table
Preset to the 5 mg vial. Change any value; the table below the result updates with it.
- Concentration
- 2.5 mg/mL
- Doses per vial
- 5
- Weeks (1 dose/wk)
- 5
40 units (0.4 mL) on a 1 mL U-100 syringe: 1 mg from a 5 mg vial + 2 mL water (Cagrilintide).
Dosing table for a 5 mg vial
Syringe units (U-100) for each dose, by how much bacteriostatic water you add.
| Dose | 1 mL water | 2 mL water | 2.5 mL water | 3 mL water |
|---|---|---|---|---|
| 0.25 mg | 5 | 10 | 12.5 | 15 |
| 0.5 mg | 10 | 20 | 25 | 30 |
| 1 mg | 20 | 40 | 50 | 60 |
| 1.5 mg | 30 | 60 | 75 | 90 |
| 2 mg | 40 | 80 | 100 | 120 |
| 2.5 mg | 50 | 100 | 125 | 150 |
How the math works
Concentration is the vial's milligrams divided by the water you add. Volume to draw is your dose divided by that concentration. On a U-100 syringe, 1 mL is 100 units, so units = mL × 100.
1 mg ÷ 2.5 mg/mL = 0.4 mL
0.4 mL × 100 = 40 units
Where the doses for a 5 mg cagrilintide vial come from
The dose-finding trial's weekly arms were 0.3, 0.6, 1.2, 2.4 and 4.5 mg of subcutaneous cagrilintide.[3]
The phase 1b trial also tested smaller weekly cagrilintide doses, down to 0.16 mg.[4]
What a 5 mg vial gives
5 mg cagrilintide vial, lower trial doses: a 0.3 mg dose gives 16 full doses per vial and draws 6 units at 1 mL, 12 units at 2 mL, 18 units at 3 mL; a 0.6 mg dose gives 8 full doses per vial and draws 12 units at 1 mL, 24 units at 2 mL, 36 units at 3 mL; a 1.2 mg dose gives 4 full doses per vial and draws 24 units at 1 mL, 48 units at 2 mL, 72 units at 3 mL.
Calculated from vial mg 5; doses mg 0.3, 0.6, 1.2; water mL 1, 2, 3; u100 units per mL 100; injections per week 1. Formula: full doses = floor(vialMg / doseMg); units = doseMg / (vialMg / waterMl) x 100; flag units < 5 or > 100
5 mg cagrilintide vial, higher trial doses: a 2.4 mg dose gives 2 full doses per vial and draws 48 units at 1 mL, 96 units at 2 mL, 144 units at 3 mL (more than a 100-unit syringe holds); a 4.5 mg dose gives 1 full dose per vial and draws 90 units at 1 mL, 180 units at 2 mL (more than a 100-unit syringe holds), 270 units at 3 mL (more than a 100-unit syringe holds).
Calculated from vial mg 5; doses mg 2.4, 4.5; water mL 1, 2, 3; u100 units per mL 100; injections per week 1. Formula: full doses = floor(vialMg / doseMg); units = doseMg / (vialMg / waterMl) x 100; flag units < 5 or > 100
A 5 mg vial mixed with 1, 2 or 3 mL of water is 5, 2.5 or 1.67 mg/mL, so one U-100 unit holds 50, 25 or 16.7 mcg.
Calculated from vial mg 5; water mL 1, 2, 3. Formula: mg/mL = vialMg / waterMl; mcg per unit = vialMg / waterMl x 10
Is 5 mg a labelled cagrilintide strength?
With no labelled cagrilintide product, the 5 mg vial size cannot be matched to an FDA strength; the doses above are trial arms only.
Calculated from vial mg 5. Formula: compare vialMg with each labelled strength in mg (none exist)
The price dataset checked on 2026-10-02 holds 20 single-vial listings at 5 mg with a median of $89.99, which is $18.0 per mg.
Calculated from vial mg 5; listings 20; median 89.99; median per mg 18; source our price listings dataset. Formula: medianPerMg = median / vialMg
Common questions
How much water goes in a 5 mg vial of Cagrilintide?
That choice only changes the concentration. With 2 mL, a 5 mg vial is 2.5 mg/mL; with 1 mL it is 5 mg/mL. Less water means fewer units per dose and harder-to-read marks for small doses.
How many units is 1 mg from a 5 mg vial?
With 2 mL of water, 1 mg is 40 units on a U-100 syringe. With other water amounts, see the table.
How many doses are in a 5 mg vial?
Divide the vial size by the dose (in the same unit). The calculator on this page shows the number of whole doses for any dose you pick.
How many units is a 0.6 mg dose from a 5 mg cagrilintide vial?
Mixed with 2 mL of water the 5 mg vial is 2.5 mg/mL, so a 0.6 mg trial dose is 24 units on a U-100 syringe.
Calculated from vial mg 5; water mL 2; dose mg 0.6. Formula: units = doseMg / (vialMg / waterMl) x 100
More on Cagrilintide
Sources
- 1Metric (SI) Prefixes (NIST Reference on Constants, Units, and Uncertainty)National Institute of Standards and Technology (NIST) · 2025physics.nist.govAccessed 2 Oct 2026
- 2BASAGLAR (insulin glargine) injection, prescribing information (DailyMed)U.S. Food and Drug Administration / DailyMed (Eli Lilly and Company label) · 2026dailymed.nlm.nih.govAccessed 2 Oct 2026
- 3Once-weekly cagrilintide for weight management in people with overweight and obesity: a multicentre, randomised, double-blind, placebo-controlled and active-controlled, dose-finding phase 2 trial.Lancet (London, England) · 2021PMID 34798060Accessed 2 Oct 2026
- 4Safety, tolerability, pharmacokinetics, and pharmacodynamics of concomitant administration of multiple doses of cagrilintide with semaglutide 2·4 mg for weight management: a randomised, controlled, phase 1b trial.Lancet (London, England) · 2021PMID 33894838Accessed 2 Oct 2026
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