Dose Calculator
Convert your prescribed dose (mg) into the number of units to draw in a standard 100-unit insulin syringe — based on your vial's concentration.
Find this on your vial label. DonoMed dispenses 2.5–10 mg tirzepatide doses in the 10 mg/mL vial and 12.5–15 mg doses in the 15 mg/mL vial.
Semaglutide is dispensed as a 2.5 mg/mL vial. Only doses offered at DonoMed are listed — always follow your provider's specific instructions.
Select your dose above to see how many units to draw.
How much medication you're taking. This is the number your provider prescribes.
How much liquid you draw into the syringe. 100 units = 1 mL.
How strong the medication is in a given volume — printed on your vial label.
Before you inject
- Check the vial label — medication name and concentration (mg/mL) — every time.
- Draw to the correct unit mark, then flick out air bubbles and re-check the mark.
- Inject subcutaneously into the abdomen (2+ inches from the belly button) or outer thigh, rotating sites.
- Dispose of syringes in a sharps container.
Common conversions
Dose questions, answered
With DonoMed's 2.5 mg/mL semaglutide vial, 0.25 mg equals 10 units on a standard 100-unit (1 mL) insulin syringe. 0.5 mg is 20 units, 1 mg is 40 units, 1.5 mg is 60 units, 2 mg is 80 units, and 2.5 mg is 100 units. Always confirm your vial's concentration and follow your provider's instructions.
With a 10 mg/mL tirzepatide vial, 5 mg equals 50 units on a 100-unit insulin syringe. With a 15 mg/mL vial, 5 mg is about 33 units. The vial concentration changes the units — always check your vial label.
Mg is your dose — how much medication you're taking. Units measure volume — how much liquid you draw into the syringe (100 units = 1 mL). Mg/mL is the concentration printed on your vial. The same units deliver different mg doses at different concentrations, so always know your dose in mg.
No. The calculator is an educational tool showing standard conversions for the doses DonoMed offers. Your provider's specific instructions always take precedence — contact them before changing anything about your injection.
This calculator is an educational tool only and does not replace medical advice. Understanding why the mg number matters so much? Read our guide to GLP-1 dosing errors. Doses shown are the options DonoMed offers; your provider's specific instructions always take precedence. Questions? Email .