Retatrutide calculator
An investigational triple receptor agonist studied for obesity and metabolic disease. Not available as an approved medicine.
Also known as: LY3437943
FDA status — not an approved drug Investigational. Retatrutide is not FDA-approved for any use and remains in clinical trials. Material sold outside a trial is not an approved drug.
Calculate your draw
Schedule Retatrutide → Set your dosing schedule and get a phone notification when each dose is due. Free.
A worked example
A 10 mg vial reconstituted with 2 mL of bacteriostatic water gives 5 mg/mL. A 1000 mcg dose is then 0.2 mL — about 20 units on a 100-unit insulin syringe, giving roughly 10 doses per vial before accounting for residual volume left in the vial and syringe.
Prefer paper? Download the printable Retatrutide dosing chart (PDF) — every vial size and water volume in syringe units, with the same review byline as this page. All charts →
Commonly cited dose range
Figures circulating for Retatrutide run from 500 mcg to 12000 mcg. Doses appearing in published trial protocols escalate slowly over many weeks. This is investigational data, not a prescribing guide.
Read this as reference information, not instruction. These numbers describe what is commonly discussed, not what is right for any individual. Dose, frequency, and whether to use Retatrutide at all are decisions for a licensed clinician who knows your history.
Common questions
Is retatrutide approved?
No. Retatrutide is an investigational compound in clinical development and has not been approved by the FDA for any indication.
How do I reconstitute a 10 mg retatrutide vial?
The arithmetic matches any lyophilized peptide: 10 mg with 2 mL of bacteriostatic water yields 5 mg/mL, so 1 mg is 0.2 mL, or 20 units on a 100-unit insulin syringe.