retatrutide / Cagrilintide calculator

Retatrutide 12.5 mg + Cagrilintide 2.5 mg in 3 mL: 10 units on a U-100 syringe holds 0.417 mg Retatrutide and 83.3 mcg Cagrilintide.

Sizes on sale: 12.5/2.5mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers, and blend vials show every component per draw.

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Retatrutide per draw

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10 units holds

0.417 mg Retatrutide · 83.3 mcg Cagrilintide

Each component per draw
component	in the vial	concentration	per draw
Retatrutide	12.5 mg	4.1667 mg/mL	0.417 mg
Cagrilintide	2.5 mg	0.8333 mg/mL	83.3 mcg

15 mg total · 5 mg/mL total · enter an amount per draw for the draw and draws per vial

between the 10 and 10.5 lines · nearest mark 10 units

10 units falls between the 10 and 10.5 marks; the nearest is 10 (0%).

the working

Retatrutide: 12.5 mg ÷ 3 mL = 4.1667 mg/mL
0.4167 mg ÷ 4.1667 mg/mL = 0.1 mL = 10 units
Cagrilintide: 0.8333 mg/mL × 0.1 mL = 83.3 mcg

If this is a prescription, the dose and volume on your pharmacy label take priority. Ask your pharmacist about any mismatch.

updated Nov 4, 2026 · exact arithmetic, checked against 21 worked cases

animal studies only

Retatrutide / Cagrilintide dosing evidence

No registered or published human study has given retatrutide and cagrilintide together (ClinicalTrials.gov and PubMed checked 2026-11-04); the only combination data are in diet-induced obese male rats (Nat Metab 2026, PMID 42744908). PeptideTech does not list unsourced doses; the Retatrutide / Cagrilintide research profile lists the published studies.

every component per draw

blend chart

Blend components per 10 units at 2 mL of water
blend vial	in 2 mL, 10 units holds	calculator
Retatrutide / Cagrilintide 12.5/2.5 mg	0.625 mg Retatrutide · 0.125 mg Cagrilintide	calculate

A blend's label can state each component (10/10 mg) or only the total (20 mg); the split above is from each vendor's listing.

what the numbers mean · where they come from

terms and sources

Label amount or measured amount. The calculator starts from the amount printed on the vial. A lot certificate’s measured content (net peptide content, in mg) can replace it for the vial that was tested. HPLC purity is a share of peak area, not a mass, so a purity-only correction is shown as an estimate. See HPLC, certificate of analysis and how to read a peptide COA.
Concentration. Amount in the vial ÷ water added. Terms: reconstitution, bacteriostatic water, lyophilized.
Syringe units. A volume: 0.01 mL per unit on a U-100 syringe, 0.025 mL on U-40. Units say nothing about the compound until the concentration is known.
Cost per draw. Vial price × amount per draw ÷ vial amount, from the price per mg of a current offer. Offers come from the Retatrutide / Cagrilintide price comparison; certificates from the COA library.

Arithmetic only, on the numbers entered. Amounts from labels or trials are cited references, not recommendations; PeptideTech does not give personal use instructions and does not test products.

short answers