Semaglutide 1 mg in Units
How many units 1 mg of semaglutide is on a U-100 insulin syringe, for every common vial strength, with the line drawn.
Updated · By Niraj Kumar · 3 sources
https://checkpre.com/health/semaglutide-1-mg-in-units
Medication
Vial strength
Printed on the vial label, e.g. "2.5 mg/mL". Common semaglutide strengths: 1, 2.5, 5 mg/mL.
Your dose
Exactly as written on your prescription. 1 mg is 1,000 mcg.
- Dose
- 1 mg
- 1,000 mcg
- Concentration
- 2.5 mg/mL
- Exact volume
- 0.4 mL
- 40 units (1 unit = 0.01 mL on a U-100 syringe)
| Weekly dose | When | Units | mL |
|---|---|---|---|
| 0.25 mg | Weeks 1–4 | 10 units | 0.1 mL |
| 0.5 mg | Weeks 5–8 | 20 units | 0.2 mL |
| 1 mg | Weeks 9–12 | 40 units | 0.4 mL |
| 1.7 mg | Weeks 13–16 | 68 units (over capacity) | 0.68 mL |
| 2.4 mg | Week 17 on (usual maintenance) | 96 units (over capacity) | 0.96 mL |
| 7.2 mg | Only if prescribed after 4+ weeks at 2.4 mg | 288 units (over capacity) | 2.88 mL |
How many units is 1 mg of semaglutide?
1 mg of semaglutide is 100 units at 1 mg/mL, 40 units at 2.5 mg/mL, 20 units at 5 mg/mL. Divide 1 mg by your vial's mg/mL and multiply by 100 for the units on a U-100 insulin syringe. On the FDA label, 1 mg is the dose for weeks 9–12.
units = dose (mg) ÷ concentration (mg/mL) × 100This page uses the same method as the GLP-1 Dosage Calculator, which explains each term and assumption in full.
| Vial strength | Units | Volume | Smallest syringe |
|---|---|---|---|
| 1 mg/mL | 100 units | 1 mL | 1 mL (100 units) |
| 2.5 mg/mL | 40 units | 0.4 mL | 0.5 mL (50 units) |
| 5 mg/mL | 20 units | 0.2 mL | 0.3 mL (30 units) |
Worked example
A 1 mg semaglutide dose from a 5 mg vial mixed with 2 mL of bacteriostatic water.
- 1Concentration: 5 mg ÷ 2 mL = 2.5 mg/mL
- 2Volume: 1 mg ÷ 2.5 mg/mL = 0.4 mL
- 3Units: 0.4 mL × 100 = 40 units
- 4Doses per vial: 5 mg ÷ 1 mg = 5
Draw to the 40 units line, on a 0.5 mL (50 units) U-100 insulin syringe.
Frequently asked questions
Which syringe should I use for 1 mg of semaglutide?
At 2.5 mg/mL, 1 mg is 40 units, so a 0.5 mL (50 units) U-100 syringe holds it. Use the smallest syringe that holds the whole dose: its lines are closer together, so the dose is easier to measure.
How many 1 mg doses are in a 5 mg vial?
5 full doses. At one dose a week that is 5 weeks, but multi-dose vials are usually discarded 28 days after first use, so check your pharmacy's beyond-use date.
Sources
Related calculators
- Semaglutide 0.5 mg in UnitsHow many units 0.5 mg of semaglutide is on a U-100 insulin syringe, for every common vial strength, with the line drawn.
- Semaglutide 1.7 mg in UnitsHow many units 1.7 mg of semaglutide is on a U-100 insulin syringe, for every common vial strength, with the line drawn.
- Semaglutide Dosage CalculatorCompounded semaglutide in mg to units on an insulin syringe, for any vial strength, with the Wegovy titration converted for your vial.
- GLP-1 Dosage CalculatorTurn a prescribed semaglutide or tirzepatide dose in mg into the exact line on a U-100 insulin syringe, with the syringe drawn to scale.