0.125mg of Semaglutide from a 2mg vial in 2mL: how many units?

Answer

Draw 12.5 units on a U-100 insulin syringe. A 2 mg Semaglutide vial reconstituted with 2 mL of bacteriostatic water is 1 mg/mL, so 0.125 mg is 0.125 mL. That vial holds about 16 doses at this strength.

This page also answers

  • How many units is 0.125mg of sema?
  • 0.125mg sema on a U-100 syringe
  • What do I draw for 0.125mg if I used 2ml?
  • 0.125 mg sema in units

Your draw

Vial 2 mg
Bacteriostatic water 2 mL
Concentration 1 mg/mL
Dose 0.125 mg
Volume to draw 0.125 mL
U-100 syringe 12.5 units
U-40 syringe 5 units
Doses per vial 16

Dose chart: 2 mg vial in 2 mL

DoseVolumeU-100 unitsU-40 unitsDoses per vial
0.125 mg 0.125 mL 12.5 5 16
0.25 mg 0.25 mL 25 10 8
0.5 mg 0.5 mL 50 20 4
1 mg 1 mL 100 40 2

Doses that would need more than a full 1 mL syringe are omitted. Use less bacteriostatic water for those.

Common questions

What if I used a different amount of water?
Then the unit number changes. Units depend on concentration, not just dose. Run your actual vial size and water volume through the reconstitution calculator rather than copying a number from a chart that assumes 2 mL.
Is that on a U-100 or U-40 syringe?
12.5 units is the U-100 reading, the standard insulin syringe at 100 units to 1 mL. On a U-40 syringe the same 0.125 mL reads 5 units.
How many 0.125 mg doses will this vial give?
About 16 doses from a 2 mg vial. Reconstitution volume doesn't change that. It only changes how many units you draw each time.
How long is it good for after mixing?
Refrigerate reconstituted peptide at 36–46°F (2–8°C). Most references give 28–60 days once mixed, depending on the preservative in the bacteriostatic water. Do not freeze it, and inspect for cloudiness or particles before every draw.

Run your own numbers

These figures assume the vial and water volumes named above. Change either one and the units change with it.

Reconstitution calculator How this is calculated