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. Enter your vial, water and dose to get the unit mark.

IndependentThis site does not sell peptides and is not owned by a vendor. Every other calculator on page one of Google belongs to a shop.

The maths is openThe formula is written out on this page and the code behind it is a single file with an automated test suite.

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ReviewedDose ranges and half-life figures last checked 3 September 2026.

Dose to units, at the standard setup

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

Based on a 10 mg vial reconstituted with 2 mL of bacteriostatic water, which is 5 mg/mL, drawn on a standard U-100 insulin syringe, once weekly.

About the numbers above

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.

A 10 mg vial at different water volumes

If the draw feels awkward to read, change the water rather than 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 stays in you

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.

Buying Cagrilintide? The where to buy page lists the vendors this site uses and what to check before ordering, and Peptide Bureau keeps the ranked vendor scorecard.

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