# Weight-Loss Plateau on Mounjaro or Wegovy: What to Do

> Why weight loss stalls, what the trial data shows about plateaus, when a dose review is sensible and what to discuss with your prescriber.

Source: https://comparepharmacyscore.com/html/guides-weight-loss-plateau.html  
Publisher: Pharmacy Score (comparepharmacyscore.com), free and independent  
Author: John Longton, GPhC Mock Inspection Service Auditor  
Last reviewed: 24 September 2026

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- Weight-loss plateau on Mounjaro or Wegovy: what to do

Guide

# Weight-loss plateau on Mounjaro or Wegovy: what to do.

Almost everyone stalls eventually. What a plateau usually means, and what the sensible moves are.

In short

Almost everyone stalls eventually. What a plateau usually means, and what the sensible moves are.

The first months on a GLP-1 often bring steady weekly losses, then the line flattens. It's normal, it's physiological, and it isn't proof the medicine has stopped working.

### Why it happens

A lighter body needs fewer calories, so the same intake that caused loss now maintains. Appetite can also edge back as your body adapts to the dose.

### The sensible moves

- **Give it three to four weeks** before judging: plateaus break on their own more often than not.

- **Review the basics**: protein, fibre, steps, sleep. Boring, but the trial results were achieved alongside these.

- **Talk to your prescriber about dose**: if you're below the maintenance dose, a step up is a clinical option. It's their call, never a DIY one.

What not to do: double doses, skip meals into dizziness, or order a higher strength you haven't been prescribed because it was cheaper. Price should never pick your dose, [how the dose ladders work](https://comparepharmacyscore.com/html/glp-1-glp-1-dose-schedule.html).

## The official sources, in one place.

These are the bodies that actually regulate, appraise and advise. If anything you read anywhere (including here) disagrees with them, believe them.

[GPhC registerCheck any pharmacy's registration before you order, free and instant.](https://www.pharmacyregulation.org/registers/pharmacy)[MHRA: buying medicines onlineThe regulator's official advice on buying medication safely on the internet.](https://www.gov.uk/guidance/buy-medicines-online)[MHRA Yellow CardReport a side effect from any medicine, it takes five minutes and it matters.](https://yellowcard.mhra.gov.uk/)[NICE: semaglutide (TA875)The evidence-based NHS guidance for Wegovy in weight management.](https://www.nice.org.uk/guidance/ta875)[NICE: tirzepatide (TA1026)The evidence-based NHS guidance for Mounjaro in weight management.](https://www.nice.org.uk/guidance/ta1026)[NHS: obesityNHS overview of treatment options, including when medicines are considered.](https://www.nhs.uk/conditions/obesity/)[NHS: Better HealthFree NHS support for losing weight, with or without medication.](https://www.nhs.uk/better-health/lose-weight/)[electronic medicines compendiumThe official patient information leaflets for every licensed UK medicine.](https://www.medicines.org.uk/emc)