Retatrutide calculator
Enter your Retatrutide vial size, the water amount you added and your dose; you'll see the units to draw with a U-100 insulin syringe.
Use this for reference only. Your dose is set by your prescriber or the product label; we only convert that dose into units.
- Vial sizes available for sale
- 10 mg, 15 mg, 20 mg, 30 mg, 48 mg or 60 mg
- status of approval
- It is not FDA-approved.
- Example: 2 mL mixed with 10 mg
- 5 mg per mL
How Retatrutide math works
To get the strength, divide the amount in the vial by the water. When a 10 mg vial contains 2 mL of water, each mL contains 5 mg. First divide your dose by that strength to find the mL, then multiply by 100 for U-100 syringe units.
From that vial, 100 mcg equals 0.02 mL or 2 units.
A quick look at Retatrutide units
| Your dose | 10 mg vial + 2 mL | 15 mg vial + 3 mL | 20 mg vial + 2 mL | 30 mg vial + 3 mL | 48 mg vial + 3 mL |
|---|---|---|---|---|---|
| 400 mcg | 8 units | 8 units | 4 units | 4 units | 2.5 units |
| 500 mcg | 10 units | 10 units | 5 units | 5 units | 3.1 units |
| 750 mcg | 15 units | 15 units | 7.5 units | 7.5 units | 4.7 units |
| 1 mg | 20 units | 20 units | 10 units | 10 units | 6.2 units |
| 1.5 mg | 30 units | 30 units | 15 units | 15 units | 9.4 units |
| 2 mg | 40 units | 40 units | 20 units | 20 units | 12.5 units |
| 2.5 mg | 50 units | 50 units | 25 units | 25 units | 15.6 units |
| 3 mg | 60 units | 60 units | 30 units | 30 units | 18.8 units |
| 4 mg | 80 units | 80 units | 40 units | 40 units | 25 units |
Every cell tells you how far to draw on a U-100 syringe, based on your vial and water.
Is Retatrutide FDA-approved?
It has no FDA-approved use in people; it is sold as a research chemical. Since no FDA label exists, there is no official dose. We convert only the dose you already have.
Questions people often ask
For a 10 mg Retatrutide vial, how much water do I add?
You choose the water amount; it only changes the strength of each mL. Adding 2 mL gives 5 mg per mL; adding more water means each unit holds less and small doses become easier to measure.
How many units equal 1 mg of Retatrutide?
The answer depends on your mix's strength. At 5 mg/mL, 20 units equal 1 mg. Put your vial and water details into the calculator to see the number.
How long does mixed Retatrutide last?
Your product or prescription tells you how to store it; follow that line. Per CDC guidance, use bacteriostatic water within 28 days after the first needle.