Peptides AcademyRetatrutide Dose Calculator
Pre-filled for Retatrutide's standard vial size. Adjust your target dose and see the exact number of units to draw on a U-100 insulin syringe.
Typical protocol: 2 mg weekly start, escalating to 12 mg (trial).
Phase-2 trial escalation: 2 → 4 → 8 → 12 mg weekly. Not yet commercially available — any supply is investigational/grey-market.
Inputs
The total mg of peptide in the lyophilized vial (e.g., 5 mg).
Volume of BAC water used for reconstitution. Common: 1, 2, or 3 mL.
Desired per-injection dose.
Quick Presets
Result
Draw on U-100 syringe
40units
= 0.4 mL draw volume
Concentration
5 mg/mL
After reconstitution
Units per mg
20
On U-100 syringe
Dose
2 mg
2 mg per injection
Doses per vial
5
Approximate
Reference tool for educational purposes. Always verify calculations independently and consult a qualified medical professional before any self-administration.
Want the full Retatrutide reference?
An investigational triple GIP / GLP-1 / glucagon receptor agonist from Eli Lilly, showing the largest weight-loss effect sizes yet reported in obesity trials (up to ~24% at 48 weeks in phase-2).
Read the Retatrutide page →