Zepbound vials
The two kinds of Zepbound vial, how many units each dose is, and what you need to draw it.
Key facts
- A single-dose vial holds one dose in 0.5 mL: 50 units on a U-100 syringe, at every strength.
- A multi-dose vial holds four doses of 0.6 mL: 60 units each.
- Syringes and needles are not included; use a new one for every dose.
- Self-pay: $299 at 2.5 mg, $399 at 5 mg, $449 from 7.5 mg with refills within 45 days.
Single-dose and multi-dose vials
| Single-dose vial | Multi-dose vial | |
|---|---|---|
| Doses inside | 1 | 4 |
| Each dose | 0.5 mL | 0.6 mL |
| On a U-100 syringe | 50 units | 60 units |
| After first use | Single use | Throw away after 30 days or 4 doses |
| Out of the fridge | Up to 21 days | Up to 30 days unopened |
Concentration by strength
Every dose comes in the same volume, so the concentration rises with the strength:
| Strength | Single-dose pen / vial | Multi-dose vial / KwikPen |
|---|---|---|
| 2.5 mg | 5 mg/mL | 4.17 mg/mL |
| 5 mg | 10 mg/mL | 8.33 mg/mL |
| 7.5 mg | 15 mg/mL | 12.5 mg/mL |
| 10 mg | 20 mg/mL | 16.7 mg/mL |
| 12.5 mg | 25 mg/mL | 20.8 mg/mL |
| 15 mg | 30 mg/mL | 25 mg/mL |
What you need for a vial
The label asks for a syringe appropriate for the dose, such as a 1 mL syringe that can measure 0.5 or 0.6 mL, and a new syringe and needle for every injection. They are bought separately. Used syringes go straight into a sharps container.
Units calculator
What Zepbound vials cost
Through Lilly’s self-pay programme the vial and the KwikPen share one price tier: $299 for a month at 2.5 mg, $399 at 5 mg and $449 at 7.5 mg and above, as long as each refill is completed within 45 days. Lilly notes that 2.5 mg is a starting dose, not a maintenance dose. Read 13 Oct 2026.
Getting Zepbound prescribed
Frequently asked questions
How many units is a Zepbound vial dose?
50 units from a single-dose vial (0.5 mL) and 60 units from a multi-dose vial (0.6 mL), at every strength.
Do Zepbound vials come with syringes?
No. Use a syringe suited to the dose, such as a 1 mL syringe, and a new syringe and needle for every injection.
How much does a Zepbound vial cost?
Through Lilly's self-pay programme, $299 at 2.5 mg, $399 at 5 mg and $449 at 7.5 mg and above with refills within 45 days (read 13 Oct 2026).
How long does an opened multi-dose vial last?
Throw it away 30 days after first use or after 4 doses, whichever comes first.