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Current regulator label
Tirzepatide reconstitution and dosing reference — published range 2.5–15 mg, evidence-tier and regulatory context, Finnrick supply-chain quality data, and a free draw-volume and U-100 syringe-unit calculator.
Status
FDA-approved prescription for labeled indications
Route
Subcutaneous
Frequency
Once weekly
Published range
2.5–15 mg
Verified
2026-06-24
Start 2.5 mg weekly; labeled maintenance 5, 10, or 15 mg weekly; max 15 mg
Commercial Zepbound is supplied pre-mixed in fixed-dose pens/vials. Use actual product concentration; do not invent a reconstitution.
Prescription-only; indication, titration, contraindications, interactions and monitoring are outside this calculator.
Supply-chain quality · Finnrick
Avg quality score
7
/10
Purity range
98.81
–
99.95
%
Qty divergence
±
49
%
Vendors · samples
176
·
2,188
Common vial sizes
10, 15, 30
mg
Test window
Dec 2024 - Jun 2026