How many units is 0.3 mg of Cagrilintide?

It depends entirely on how much water you added. In a 10 mg vial reconstituted with 2 mL, the concentration is 5 mg/mL, so 0.3 mg is 0.06 mL, which is 6 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 3 units, and with 3 mL it is 9 units.

How much bacteriostatic water for a 10 mg Cagrilintide vial?

2 mL is the usual choice. It gives 5 mg/mL, which puts the commonly reported range of 0.16 mg to 4.5 mg between roughly 3.2 and 90 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.

How many doses are in a 10 mg vial?

Divide 10 by your dose. At 0.3 mg that is 33 doses, which at once weekly is 231 days.

Can cagrilintide be dosed in the same syringe as semaglutide?

People report drawing both from separate vials into one syringe. Whether that is appropriate is a question for a clinician. The calculator only handles one vial at a time, so run each compound separately and add the two unit counts if you do combine them.

Cagrilintide dosage calculator

Cagrilintide is dosed weekly in small milligram amounts, usually alongside semaglutide.

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25 printable pages: dosing cards for the twelve most-used compounds at three water volumes, titration planners, a vial log, and five pages on what to do when it has already gone wrong.

Dose to units at the usual vial and water

Dose	U-100 units	Draw	Doses per vial	Vial lasts
0.3 mg	6 units	0.06 mL	33	231 days
0.6 mg	12 units	0.12 mL	16	112 days
1.2 mg	24 units	0.24 mL	8	56 days
2.4 mg	48 units	0.48 mL	4	28 days
4.5 mg	90 units	0.9 mL	2	14 days

10 mg vial in 2 mL of bacteriostatic water (5 mg/mL), U-100 insulin syringe, once weekly.

About Cagrilintide

Cagrilintide is a long-acting amylin analogue. In trials it has been studied on its own and in a fixed combination with semaglutide (CagriSema). It is investigational and not approved, and vials sold online are sold for research use.

The trial ladder ran 0.3, 0.6, 1.2, 2.4 and 4.5 mg once weekly, stepping every four weeks. The table above uses that ladder. A 10 mg vial with 2 mL of water puts 0.3 mg at 6 units, which is a small draw; using 1 mL of water instead halves it to 3 units and is harder to read, so for the low rungs more water is the easier setup.

The same 10 mg vial at other water volumes

If the draw is awkward to read, change the water, not the dose. The dose stays the same; only the mark moves.

Vial	BAC water	Concentration	Draw	U-100 units	Doses/vial
10 mg	1 mL	10 mg/mL	0.03 mL	3 units	33
10 mg	2 mL	5 mg/mL	0.06 mL	6 units	33
10 mg	3 mL	3.33 mg/mL	0.09 mL	9 units	33
20 mg	1 mL	20 mg/mL	0.015 mL	1.5 units	66
20 mg	2 mL	10 mg/mL	0.03 mL	3 units	66
20 mg	3 mL	6.67 mg/mL	0.045 mL	4.5 units	66

All rows above assume a 0.3 mg dose and a standard U-100 insulin syringe, where 100 units = 1 mL.

How long it lasts in the body

The half-life of Cagrilintide is about 7.5 days. That is the time for the amount in your blood to halve, so after one half-life you are at 50 percent of the peak, after two you are at 25 percent, and after four you are at roughly 6 percent. This is why a weekly compound still has meaningful levels present when the next dose lands, and why levels build over the first several weeks before they settle.

Common questions

How many units is 0.3 mg of Cagrilintide?: It depends entirely on how much water you added. In a 10 mg vial reconstituted with 2 mL, the concentration is 5 mg/mL, so 0.3 mg is 0.06 mL, which is 6 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 3 units, and with 3 mL it is 9 units.
How much bacteriostatic water for a 10 mg Cagrilintide vial?: 2 mL is the usual choice. It gives 5 mg/mL, which puts the commonly reported range of 0.16 mg to 4.5 mg between roughly 3.2 and 90 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.
How many doses are in a 10 mg vial?: Divide 10 by your dose. At 0.3 mg that is 33 doses, which at once weekly is 231 days.
Can cagrilintide be dosed in the same syringe as semaglutide?: People report drawing both from separate vials into one syringe. Whether that is appropriate is a question for a clinician. The calculator only handles one vial at a time, so run each compound separately and add the two unit counts if you do combine them.

IndependentThis site does not sell peptides and is not owned by a vendor.

The maths is openThe formula is on every page and in the methodology. The code is one file with an automated test suite, run before each deploy.

How it earnsAffiliate links on one marked page, never inside the calculator.

ReviewedDose ranges and half-lives checked 3 September 2026.

Buying Cagrilintide?

The where to buy page lists the vendors this site uses and what to check first. Peptide Bureau keeps the ranked scorecard.

Where to buyWhat to check before you order Vendor scorecardRanked vendors, at Peptide Bureau Build a full protocolThe stack builder at Peptide Bureau, about two minutes

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Dosage charts and schedules

Peptide reconstitution chart Concentration for every vial and water combination
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KLOW dosage and frequency chart The 80 mg blend at 2, 3 and 4 mL, both phases
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Tools

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Reconstitution calculator How much water to add, and why it matters
mg to units calculator Both directions, any concentration
Bacteriostatic water calculator Pick a volume that lands where you can read it
How to read an insulin syringe U-100 vs U-40, and the 2.5x error
The Protocol Pack Free 25-page printable reference
Where to buy Vendor notes and what to check first
1 mg to units on an insulin syringe The conversion table for every common concentration

Before you use these numbers This is a unit-conversion tool. It turns a vial strength and a water volume into a concentration, a draw volume and a syringe mark. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most compounds listed are sold for laboratory research and are not approved for human use. Nothing here is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always check the strength printed on your own vial rather than trusting a preset.