Vial to Units

Retatrutide Calculator

Convert a dose of Retatrutide into syringe units. Enter the vial size, the bacteriostatic water added and the dose on your prescription.

mg
mL

Enter the vial size and the water you added.

Arithmetic only. This tool does not recommend a dose; use the one your prescriber gave you.

About Retatrutide

Retatrutide is an investigational GIP, GLP-1 and glucagon receptor agonist.

Investigational. Not FDA-approved, and not available as a prescription medicine.

Retatrutide concentration chart

Concentration for common vial sizes at 1, 2, 3 and 5 mL of water, with the amount held in every 10 units of a U-100 syringe.

Vial1 mL water2 mL water3 mL water5 mL water
5 mg5 mg/mL · 0.5 mg (500 mcg) per 10 units2.5 mg/mL · 0.25 mg (250 mcg) per 10 units1.667 mg/mL · 0.1667 mg (166.7 mcg) per 10 units1 mg/mL · 0.1 mg (100 mcg) per 10 units
10 mg10 mg/mL · 1 mg per 10 units5 mg/mL · 0.5 mg (500 mcg) per 10 units3.333 mg/mL · 0.3333 mg (333.3 mcg) per 10 units2 mg/mL · 0.2 mg (200 mcg) per 10 units
12 mg12 mg/mL · 1.2 mg per 10 units6 mg/mL · 0.6 mg (600 mcg) per 10 units4 mg/mL · 0.4 mg (400 mcg) per 10 units2.4 mg/mL · 0.24 mg (240 mcg) per 10 units
15 mg15 mg/mL · 1.5 mg per 10 units7.5 mg/mL · 0.75 mg (750 mcg) per 10 units5 mg/mL · 0.5 mg (500 mcg) per 10 units3 mg/mL · 0.3 mg (300 mcg) per 10 units
20 mg20 mg/mL · 2 mg per 10 units10 mg/mL · 1 mg per 10 units6.667 mg/mL · 0.6667 mg (666.7 mcg) per 10 units4 mg/mL · 0.4 mg (400 mcg) per 10 units
30 mg30 mg/mL · 3 mg per 10 units15 mg/mL · 1.5 mg per 10 units10 mg/mL · 1 mg per 10 units6 mg/mL · 0.6 mg (600 mcg) per 10 units

Units per 1 mg of Retatrutide

How many units on a U-100 syringe hold 1 mg, for each vial size and water volume. 1 mg is a round reference amount for scaling, not a dose: multiply or divide to match the dose on your prescription, or use the calculator.

Vial1 mL water2 mL water3 mL water5 mL water
5 mg20 units40 units60 units100 units
10 mg10 units20 units30 units50 units
12 mg8.333 units16.67 units25 units41.67 units
15 mg6.667 units13.33 units20 units33.33 units
20 mg5 units10 units15 units25 units
30 mg3.333 units6.667 units10 units16.67 units

Questions

How do I calculate Retatrutide units on a syringe?

Divide the mg in the vial by the mL of water added to get mg/mL. Divide your prescribed dose by that figure for mL, then multiply by 100 for units on a U-100 syringe. For example, a 10 mg vial with 2 mL of water is 5 mg/mL, so every 10 units holds 0.5 mg (500 mcg).

How many units is 1 mg of Retatrutide?

It depends on the vial size and the water added. With a 10 mg vial, 1 mg is 10 units after 1 mL of water, 20 units after 2 mL of water, 30 units after 3 mL of water. The lookup table above covers the other vial sizes.

Is Retatrutide measured in mg or mcg?

Retatrutide vials are labelled in mg. If your prescription is written in mcg, divide by 1,000 to get mg, or switch the dose field to mcg. In a 10 mg vial mixed with 2 mL, one unit on the syringe holds 0.05 mg (50 mcg).

How much bacteriostatic water do I add to Retatrutide?

Follow the amount on your pharmacy label. The volume of water does not change how much Retatrutide is in the vial; it only changes how many units a given dose takes up. Enter whatever amount was actually added.

What Retatrutide dose should I enter?

The dose written on your prescription. This page converts a dose into syringe units and does not recommend one.

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