1 mg Retatrutide in Units: Syringe Chart
How many syringe units 1 mg of Retatrutide is, for every common vial size and water volume, with the math shown.
- Amount
- 1 mg
- At 5 mg/mL
- 20 units
- e.g. 10 mg vial + 2 mL
- At 10 mg/mL
- 10 units
- e.g. 20 mg vial + 2 mL
- Syringe
- U-100
- 100 units = 1 mL
1 mg in units at common mixes
Units on a U-100 syringe (100 units = 1 mL) for a 1 mg amount, by vial size and water added. Concentration = vial mg ÷ mL of water; units = dose ÷ concentration × 100.
| Vial | Water | Concentration | Units for 1 mg | Volume |
|---|---|---|---|---|
| 5 mg | 1 mL | 5 mg/mL | 20 u | 0.20 mL |
| 5 mg | 2 mL | 2.5 mg/mL | 40 u | 0.40 mL |
| 5 mg | 3 mL | 1.667 mg/mL | 60 u | 0.60 mL |
| 10 mg | 1 mL | 10 mg/mL | 10 u | 0.10 mL |
| 10 mg | 2 mL | 5 mg/mL | 20 u | 0.20 mL |
| 10 mg | 3 mL | 3.333 mg/mL | 30 u | 0.30 mL |
| 12 mg | 1 mL | 12 mg/mL | 8.3 u | 0.08 mL |
| 12 mg | 2 mL | 6 mg/mL | 16.7 u | 0.17 mL |
| 12 mg | 3 mL | 4 mg/mL | 25 u | 0.25 mL |
| 15 mg | 1 mL | 15 mg/mL | 6.7 u | 0.07 mL |
| 15 mg | 2 mL | 7.5 mg/mL | 13.3 u | 0.13 mL |
| 15 mg | 3 mL | 5 mg/mL | 20 u | 0.20 mL |
| 20 mg | 1 mL | 20 mg/mL | 5 u | 0.05 mL |
| 20 mg | 2 mL | 10 mg/mL | 10 u | 0.10 mL |
| 20 mg | 3 mL | 6.667 mg/mL | 15 u | 0.15 mL |
| 24 mg | 1 mL | 24 mg/mL | 4.2 u | 0.04 mL |
| 24 mg | 2 mL | 12 mg/mL | 8.3 u | 0.08 mL |
| 24 mg | 3 mL | 8 mg/mL | 12.5 u | 0.13 mL |
Calculator and full dosing table
Preset to 1 mg in a 10 mg vial. Change any value; the table below the result updates with it.
- Concentration
- 5 mg/mL
- Doses per vial
- 10
- Weeks (1 dose/wk)
- 10
20 units (0.2 mL) on a 1 mL U-100 syringe: 1 mg from a 10 mg vial + 2 mL water (Retatrutide).
Dosing table for a 10 mg vial
Syringe units (U-100) for each dose, by how much bacteriostatic water you add.
| Dose | 1 mL water | 2 mL water | 2.5 mL water | 3 mL water |
|---|---|---|---|---|
| 0.5 mg | 5 | 10 | 12.5 | 15 |
| 1 mg | 10 | 20 | 25 | 30 |
| 2 mg | 20 | 40 | 50 | 60 |
| 4 mg | 40 | 80 | 100 | 120 |
| 6 mg | 60 | 120 | 150 | 180 |
| 8 mg | 80 | 160 | 200 | 240 |
| 10 mg | 100 | 200 | 250 | 300 |
How the math works
Concentration is the vial's milligrams divided by the water you add. Volume to draw is your dose divided by that concentration. On a U-100 syringe, 1 mL is 100 units, so units = mL × 100.
1 mg ÷ 5 mg/mL = 0.2 mL
0.2 mL × 100 = 20 units
Common questions
How many units is 1 mg of Retatrutide?
It depends on the concentration. With a 10 mg vial and 2 mL of water (5 mg/mL), 1 mg is 20 units on a U-100 syringe. The table shows other mixes.
Is 1 mg a recommended dose of Retatrutide?
This page is math only. It converts an amount into syringe units and does not recommend a dose. See the dosage page for what studies used.
More on Retatrutide
Sources
- 1Triple-Hormone-Receptor Agonist Retatrutide for Obesity: A Phase 2 Trial (Jastreboff AM et al.)New England Journal of Medicine · 2023PMID 37366315Accessed 2 Oct 2026
- 2Retatrutide, a Triple Hormone Receptor Agonist, for Treatment of Obesity (TRIUMPH-1; Jastreboff AM et al.)New England Journal of Medicine · 2026PMID 42814954Accessed 2 Oct 2026
- 3A Phase 2 Study of Once-Weekly LY3437943 Compared With Placebo in Participants Who Have Obesity or Are Overweight With Weight-Related Comorbidities (NCT04881760; arms and posted results)ClinicalTrials.gov (U.S. National Library of Medicine) · 2021clinicaltrials.govAccessed 2 Oct 2026
- 4Metric (SI) Prefixes (NIST Reference on Constants, Units, and Uncertainty)National Institute of Standards and Technology (NIST) · 2025physics.nist.govAccessed 2 Oct 2026
- 5BASAGLAR (insulin glargine) injection, prescribing information (DailyMed)U.S. Food and Drug Administration / DailyMed (Eli Lilly and Company label) · 2026dailymed.nlm.nih.govAccessed 2 Oct 2026
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