Tirzepatide 120 mg vial
Prices from 4 vendors, and how much to draw for the commonly cited doses.
Read the regulatory status before you compare prices.
In January 2026 the FDA asked that the warning about suicidal thoughts and behaviour be removed from the obesity versions of this drug family after a review found no increased risk. Labels were updated in February 2026.
What a 120 mg vial costs
Every vendor we track that lists this exact size, cheapest first. Sort order is price only; affiliate status never changes it.
Median $2.74, or $2.74 per mg, across the 4 vendors with an exact, in-stock price.
Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named
- Ascend ScienceGLP-2 TZ$161.00Starting price, larger sizes cost more · Sale price, list price not shown
- Pura PeptidesTirzepatide$260.00$400.00
- Penguin PeptidesGLP-1 T$329.00
- Northline LabsTirz GLP-2$439.99
| Vendor | Size | Price | Per mg | Availability | Checked | Link |
|---|---|---|---|---|---|---|
| Ascend Science GLP-2 TZ | 120 mg | $161.00Starting price, larger sizes cost more · Sale price, list price not shown | $1.34 | in stock | Aug 24, 2026 | View°code PEPTIDEDECODING saves 15% |
| Pura Peptides Tirzepatide | 120 mg | $260.00$400.00 | $2.17 | in stock | Sep 12, 2026 | View |
| Penguin Peptides GLP-1 T | 120 mg | $329.00 | $2.74 | in stock | Sep 12, 2026 | View |
| Northline Labs Tirz GLP-2 | 120 mg | $439.99 | $3.67 | in stock | Sep 12, 2026 | View |
We earn from these links. It never changes a price or a position here.
How to mix a 120 mg vial
Find the column for the amount of water you added to the vial. The number is how far to draw on a U-100 insulin syringe, where 100 units is 1 mL. This is arithmetic on the label, not a recommended dose.
How to read an insulin syringe · How much water to add
| Dose | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 2.5 mg | 2.1 units 48.0 doses/vial | 4.2 units 48.0 doses/vial | 6.3 units 48.0 doses/vial |
| 15 mg | 12.5 units 8.0 doses/vial | 25.0 units 8.0 doses/vial | 37.5 units 8.0 doses/vial |
Printed on the vial.
iPeptide Decoding does not recommend a dose. Enter the amount your clinician gave you, or pick a value from the reference range to model.
Same dose, different draw. Pick whichever is easiest to measure.
U-100 insulin syringe (1 mL = 100 units). Draw to the teal line.
Multi-vendor comparison is a Pro feature.
Daily is 7. Twice weekly is 2.