Overview
It's common to notice weight loss is a little more gradual at first when switching to Wegovy® compared with Mounjaro®. However, over time, most people still achieve meaningful and lasting results on Wegovy®, especially when staying consistent with their weekly injections.
Use this article when you want to:
Understand how weight loss on Wegovy® and Mounjaro® compares over the first six months
Learn how consistency affects your results on either medication
Find out about the benefits of Wegovy® as a long-term treatment choice
How Does Weight Loss on Wegovy® Compare to Mounjaro® Over Time?
Mounjaro® often shows faster results in the initial weeks, due to its dual-hormone action (GIP and GLP-1), but the gap between Wegovy® and Mounjaro® tends to narrow the longer you continue treatment:
Similar long-term results: by around six months, the total weight lost is often similar between Wegovy® and Mounjaro®.
The gap narrows over time: clinical trial data comparing the two medications head-to-head has shown a difference in total weight loss at one year, though the exact figure varies by study. Based on MedExpress's own customer data, the difference seen in practice is often even smaller — around 3%.
New milestones: with the 2026 introduction of the 7.2mg Wegovy® dose, average weight loss results at this higher dose are more comparable to higher-dose Mounjaro® than at lower Wegovy® doses.
Why Does a "Steady" Approach Work?
Many clinicians recommend a slower, steadier rate of weight loss. This "slow and steady" approach can offer several benefits:
Improved tolerability: a gradual transition gives your digestive system more time to adjust, potentially reducing nausea and other side effects.
Skin and hair health: losing weight at a controlled pace can help reduce the risk of significant hair thinning or loose skin, which can sometimes follow very rapid weight loss.
Sustainable habits: slower weight loss allows more time to establish the long-term nutrition and exercise habits needed to maintain your goal weight.
Why Does Consistency Matter?
The single strongest predictor of success on any GLP-1 weight-loss medication is consistency. Regular weekly injections keep your medication at a stable level in your system, which is essential for managing cravings and "food noise" effectively. Staying consistent over the 12 to 18 months typically required for a full transformation gives your body the time it needs to reach these longer-term results, whichever medication you're on.
Wegovy® is also licensed to reduce the risk of serious heart issues (such as heart attack, stroke, or poor blood flow to the limbs) in adults who have a history of heart disease alongside obesity or overweight — an additional benefit for people in that group considering Wegovy® as a long-term treatment. On top of this, Wegovy® is priced lower than Mounjaro® at every equivalent dose step, making it a cost-effective option for many people to sustain over the course of treatment.