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Retatrutide calculator

Retatrutide reconstitution & dosage calculator

Pre-loaded with the Retatrutide defaults from the literature. Adjust vial size, diluent, target dose, and syringe to fit your protocol. Supports mg, mcg, and IU.

Common research range for Retatrutide: 1000–12000 mcg, 1× daily, subcutaneous. Cycle: 48 weeks on.

Educational use only. This calculator performs unit math on the values you provide and is not a substitute for medical advice. Verify every calculation independently.

Result

Concentration
2500 mcg / mL
Per syringe unit
25.00 mcg / unit
Draw to this mark
260.0 units (2.60 mL)
⚠ Exceeds 100 units — use less diluent or a larger syringe.
Dose, all units
6500 mcg · 6.500 mg
Doses per vial
0.8 doses
Days per vial
0.8 days
Vials needed for 48-week cycle
437 vials

Numbers are computed from your inputs. Verify all calculations independently. Educational use only.

About Retatrutide

An investigational triple agonist of GLP-1, GIP, and glucagon receptors studied for obesity and metabolic syndrome with the largest weight-loss signals in clinical trials to date.

Research dose ranges

  • Dose: 1000–12000 mcg per administration
  • Frequency: 1× per day
  • Route: subcutaneous
  • Half-life: ~144 hours
  • Cycle: 48 weeks on / 0 off

Phase II studied doses of 1, 2, 4, 8, and 12 mg weekly with a titration scheme similar to other GLP-1 class agents. As retatrutide is still investigational, doses outside of clinical trials are not established. Dose values are in mcg for consistency with the database schema (1000–12000 mcg = 1–12 mg).

Storage

As an investigational compound, retatrutide is not commercially available. Research samples should be stored per manufacturer specification, typically at 2–8°C.

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Retatrutide calculator FAQ

How do I use the Retatrutide calculator?+

Confirm your vial size in mg (default 5), set the diluent volume in mL (default 2), enter your target dose, and the calculator returns the concentration, the exact insulin-syringe units to draw, and how many doses your vial yields.

What's the standard Retatrutide reconstitution?+

Most Retatrutide research protocols reconstitute a 5 mg vial with 2 mL of bacteriostatic water, yielding 2500 mcg/mL.

What syringe should I use for Retatrutide?+

U-100 insulin syringes are standard for Retatrutide subcutaneous administration. 0.5 mL barrels have clearer unit markings for typical research doses.

Does the Retatrutide calculator support mg and IU?+

Yes. Enter your dose in mcg, mg, or IU. For IU, set the mcg-per-IU ratio (333 for HGH is a common default).