Hormonal
Continuing tirzepatide treatment beyond 12 weeks allows the vast majority (90%) of 'late responders' (those with <5% weight loss at Week 12) to achieve clinically meaningful weight reduction (≥5%) by Week 72.
If you are taking tirzepatide and haven't lost significant weight in the first 3 months, do not stop. Your dose is likely still being increased. Most people who seem like 'non-responders' early on will achieve meaningful weight loss if they stay on the medication until they reach their maximum dose (around 20-25 weeks).
Among late responders to tirzepatide, the vast majority (90%) achieved 5% or more weight reduction at Week 72. This finding suggests that extending treatment well beyond 12 weeks may allow additional patients to achieve clinically meaningful weight reduction.
Why this rating
Based on a large, randomized, double-blind, placebo-controlled phase 3 trial (SURMOUNT-1), though this specific finding is a post hoc analysis.
Source
Weight reduction over time in tirzepatide‐treated participants by early weight loss response: Post hoc analysis in SURMOUNT‐1
Jamy D. Ard et al. · Diabetes Obesity and Metabolism · 2025
DOI 10.1111/dom.16554
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This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →