Tirzepatide reconstitution calculator.
Dual GLP-1 / GIP receptor agonist, FDA-approved for type 2 diabetes (Mounjaro) and obesity (Zepbound). Weekly subq injection, doses ramp from 2.5 mg to 15 mg.
★Tirzepatide dose ranges between 2 mg to 15 mg (2–15 mg/week)
Draw the plunger to 50 units on a U-100 insulin syringe.
That’s 0.500 mL of solution, or 5 mg of peptide.
Reconstituting Tirzepatide, step by step.
- 1Draw 2 mL of bacteriostatic water into your syringe.
- 2Inject slowly down the side of the tirzepatide vial.
- 3Swirl gently — do not shake — until the solution is clear.
- 4Refrigerate. Use within 4 weeks.
Tirzepatide questions, answered.
What's the standard tirzepatide titration?+
2.5 mg/week for weeks 1–4, then 5 mg for weeks 5–8, then optionally 7.5, 10, 12.5, 15 mg in 4-week increments. Most people find a working dose between 7.5 and 12.5 mg/week.
When should I inject tirzepatide?+
Once per week, same day each week. Time of day doesn't matter much for the GLP-1 effect. Many users go Sunday night so peak GI side effects (Mon–Tue) hit on lower-stakes days.
How long does reconstituted tirzepatide last?+
Refrigerated, 4 weeks of stability before noticeable degradation. A 20 mg vial at 10 mg/week is 2 weeks of dosing, so stability is rarely the limiting factor.
More for Tirzepatide users.
Got the math. Now get the Tirzepatide.
Eight peptide vendors, in the order we recommend. Our top pick is the one we actually order from.
See vendors →