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Zepbound vial units to mg

Choose your vial type and strength, then enter the units you drew. Single-dose and multi-dose vials have different concentrations, so check the label.

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Arithmetic on the numbers you enter. Check the result against your label and ask your prescriber. Reko does not suggest doses, and this is not medical advice.

How it works

Concentration = labelled dose ÷ its volume, 0.5 mL for a single-dose vial and 0.6 mL for each dose of a multi-dose vial. Dose = units ÷ 100 × concentration. A full dose is 50 units from a single-dose vial and 60 units from a multi-dose vial.

The full explanation

Sources
  1. Zepbound U.S. prescribing information (revised August 2026), DailyMed.

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