Tirzepatide Dosing Chart & Schedule: Visual 1.5mg to 13.5mg Guide 2025

Tirzepatide’s dosing schedule spans four months and five dose levels. This comprehensive chart walks you through each phase, helping you understand when increases happen, what to expect at each dose, and how to determine your ideal maintenance level.

Tirzepatide follows a 20-week titration schedule to reach maximum dose. As a dual GIP/GLP-1 receptor agonist, tirzepatide works through two distinct mechanisms simultaneously. Your body needs adequate time to adjust to both pathways, which makes the gradual dose escalation critical.

Think of it this way: tirzepatide activates twice as many receptors as single-mechanism GLP-1 medications. That dual action delivers more powerful weight loss results—clinical trials showed average weight loss of 22.5% at the maximum dose—but requires a careful approach to minimize side effects during the ramp-up period.

The SURMOUNT trials, which established tirzepatide’s efficacy for weight loss, tested various titration schedules before determining this specific protocol provided the best balance: rapid enough to see meaningful results within months, but gradual enough that most patients tolerate it well. Patients who tried to accelerate through doses faced significantly higher discontinuation rates due to severe nausea and gastrointestinal distress.