How many doses of Mounjaro (tirzepatide) are in a standard prefilled pen for a patient with type 2 diabetes?

Mounjaro Pen Dosing Information

Each Mounjaro (tirzepatide) pen contains a single dose of medication. The pen is designed as a single-use, prefilled injection device that delivers one complete dose per pen 1.

Pen Specifications

• Mounjaro comes in single-dose prefilled pens, with each pen containing one weekly dose of tirzepatide 2
• The medication is also available in single-dose vials as an alternative formulation 2
• Each pen is used once weekly for subcutaneous injection 1, 2

Available Dose Strengths

• Tirzepatide is available in multiple dose strengths: 2.5 mg, 5 mg, 10 mg, and 15 mg per pen 1
• The medication is initiated at 2.5 mg per week and escalated by 2.5 mg every 4 weeks until the assigned maintenance dose is achieved 3
• The maximum approved dose is 15 mg weekly 1

Clinical Context

• Tirzepatide is administered once weekly as a subcutaneous injection for type 2 diabetes management 4, 3
• Unlike insulin pens that contain multiple doses (such as insulin pens with 3.0 mL cartridges allowing multiple injections), Mounjaro pens are single-use devices 5
• Each pen should be discarded after the single injection is administered 1