Enter your cagrilintide vial size and the volume of bacteriostatic water you are adding. The calculator returns the concentration in mcg/ml and the exact units to draw on a U-100 insulin syringe. It works for the common 5mg and 10mg vials at every titration step.
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Results
Concentration
2500 mcg/ml
2.5 mg/ml
Volume to inject
0.48 ml
per dose
Units on insulin syringe (U-100)
48 units
on a standard 100-unit insulin syringe
Doses per vial
4 doses
at 1200 mcg each
How this is calculated
5mg × 1,000 = 5000 mcg total
5000 ÷ 2ml = 2500 mcg/ml
1200 mcg ÷ 2500 = 0.48 ml
0.48 ml × 100 = 48 units
Disclaimer: This calculator is provided for informational purposes only. Always verify results against your specific vial labelling before use. Peptidy does not provide medical advice — consult a qualified healthcare professional before beginning or modifying any protocol. Use of research peptides may be subject to legal restrictions in your jurisdiction.
Cagrilintide is a long-acting amylin analogue dosed once weekly and titrated upward. It is often studied alongside semaglutide (the CagriSema combination). Because the maintenance dose is small relative to the vial, accurate reconstitution matters.
A weekly titration pattern reflecting the doses used in cagrilintide trials, escalated over several weeks to limit gastrointestinal side effects.
| Starting dose | 0.3 mg (300 mcg) once weekly |
| Mid titration | 0.6–1.2 mg (600–1,200 mcg) once weekly |
| Higher dose | up to 2.4 mg (2,400 mcg) once weekly |
Worked example: 5mg vial + 2ml BAC water, 1.2mg dose
2ml gives 2,500 mcg/ml. A 0.3mg starting dose is then 0.12ml = 12 units, and a 2.4mg dose is 0.96ml = 96 units. Use less water if you want smaller injection volumes at the higher doses.
With a 5mg vial reconstituted in 2ml (2,500 mcg/ml): 300 ÷ 2,500 = 0.12ml = 12 units. Enter your vial size and water volume above for your exact figure.
In research, cagrilintide is frequently paired with semaglutide (the combination is known as CagriSema). If you are reconstituting two separate compounds, calculate each one individually — never assume the same units apply to both.
Refrigerate at 2–8°C away from light and label the vial with the date. Reconstituted cagrilintide in bacteriostatic water is commonly used within 4–8 weeks. Do not freeze it.
Store your vial concentration, log every dose against it, and never lose track of what you injected or when.