
Tirzepatide Dosage Chart for Weight Loss 2026: Complete Schedule (Zepbound, Mounjaro & Compounded)
Verified May 2026: Tirzepatide starts at 2.5 mg once weekly (non-therapeutic starter dose), escalates by 2.5 mg every 4 weeks to a maximum of 15 mg once weekly. Full escalation takes 20 weeks. At 72 weeks, the 15 mg dose produced 20.9% body weight loss in SURMOUNT-1 — equivalent to roughly 47 lbs for a 225-lb person. The 5 mg and 10 mg doses are also valid long-term maintenance doses (15% and 19.5% weight loss respectively). Same dosing schedule applies to Zepbound, Mounjaro, and compounded tirzepatide.