Free calculator
Retatrutide Dosage and Reconstitution Calculator
Enter your retatrutide vial amount, bacteriostatic water, and dose to calculate concentration, volume per dose, and syringe units. This calculator performs arithmetic on your entries and does not suggest a dose.
Retatrutide is a research compound, not for human use. This calculator performs arithmetic on the numbers you enter. It does not verify, endorse, or recommend using this compound.
About retatrutide
Retatrutide is an investigational peptide currently in clinical development. It has not been approved by the FDA, EMA, MHRA, or any other medicines regulator for any use.
Because it is not an approved drug, retatrutide cannot be legally prescribed by a doctor or legally compounded by a pharmacy for human use in the United States, the EU, or the UK.
Outside of approved clinical trials, it exists only as a research material, sold as a lyophilized powder. That is why it requires reconstitution with bacteriostatic water before use in a research setting, which is the calculation this page performs.
- Concentration
- Volume per dose
- Units to draw
- Doses per vial
Results
How it works
Concentration = vial amount ÷ water added
Volume per dose = dose amount ÷ concentration
Units to draw = volume per dose × 100 for a U-100 syringe, or × 40 for a U-40 syringe
Worked example
A 10 mg retatrutide vial with 2 ml of bacteriostatic water gives 5 mg/ml. Enter your own vial amount, water added, and dose above; keep the vial and dose in the same unit.
Frequently asked questions
How many units is my retatrutide dose?
It depends on your vial concentration and the dose you enter. Enter your vial amount, water added, and dose above, and the calculator shows the exact unit count for your syringe.
Why does retatrutide need reconstitution?
It is supplied as a lyophilized (freeze-dried) powder, which is standard for a research peptide. Adding bacteriostatic water dissolves the powder into a liquid concentration that can be measured with a syringe.
Is retatrutide FDA approved?
No. Retatrutide has not been approved by the FDA, EMA, MHRA, or any other regulator for any use. See the About section above.
Can a pharmacy compound retatrutide for me?
No. Because retatrutide is not an approved drug, pharmacies cannot legally compound it for human use.
How does the retatrutide reconstitution calculator work?
It uses the vial amount, bacteriostatic water, and dose you enter to calculate concentration, volume per dose, and syringe units. It performs arithmetic only and does not suggest a dose.
Does Peptisy give medical advice?
No. Peptisy performs arithmetic on the numbers you enter. It does not recommend, adjust, or suggest a dose. Talk to your prescriber about your protocol.
Retatrutide is a research compound, not for human use. This calculator performs arithmetic on the numbers you enter. It does not verify, endorse, or recommend using this compound.