Why Wegovy Isn't Working for You: A Practical Breakdown

Step 1: Check which dose you're actually on

The titration path for Wegovy runs from 0.25mg up through 0.5mg, 1.0mg and 1.7mg before reaching the 2.4mg maintenance dose, with roughly four weeks at each level. That means most people aren't on the full therapeutic dose until around month four or five. A lot of the frustration our prescribers hear about (Wegovy not seeming to work in the first couple of months) turns out to be impatience with a process that is working exactly as intended.

If you're still in the titration phase, the honest answer is that the dose isn't there yet. The lower doses exist mainly to give your body time to adjust and reduce gastrointestinal side effects; meaningful appetite suppression often strengthens noticeably after 1.0mg or 1.7mg. The semaglutide overview on our site explains how the mechanism builds across the schedule. Keep going, stick to the diet and activity changes, and review with your prescriber before drawing conclusions.

If you've been on 2.4mg for at least two to three months and the scale simply hasn't moved, that's a different and more specific problem, and the steps below are where to look.

Step 2: Rule out the most common practical reasons

Before concluding Wegovy doesn't work for you, it's worth going through this short checklist honestly. Each point has caught people out.

Injection technique. Subcutaneous injections into the wrong tissue layer (muscle rather than fat) can reduce absorption. The pen should go into soft tissue at the abdomen, thigh or upper arm, not into a muscle. If you're unsure, your prescriber or pharmacist can walk you through it.

Storage. Semaglutide pens should be kept refrigerated between 2°C and 8°C. A pen that's been left out too long, stored in a hot car or accidentally frozen may have degraded. Check the Patient Information Leaflet for the exact guidance, and if there's any doubt, contact whoever dispensed it.

What's going into your body alongside it. Wegovy slows gastric emptying, which can affect how quickly other oral medicines are absorbed. If you're on any medications you started around the same time, mention them to your prescriber. For women on the contraceptive pill, there are specific considerations, our Wegovy page covers what the NHS advises about additional contraception.

Calorie offset. Appetite suppression is real, but it's possible to inadvertently compensate through liquid calories, alcohol, or eating in response to habit rather than hunger. The STEP 1 trial's weight-loss results were achieved alongside structured lifestyle support; the injection isn't a freestanding fix. The connection between Wegovy and physical activity is worth reading if you haven't already.

Step 3: Consider whether a plateau is physiological

Weight loss on any medicine, including semaglutide, tends to slow after the first few months. This is partly adaptation: your body adjusts its energy expenditure in response to weight lost, a phenomenon that is biological rather than behavioural. It doesn't necessarily mean the medicine has stopped working, it may mean it's holding your new weight rather than pushing further down.

If you've been on the 2.4mg dose for six months or more and progress has genuinely flatlined, it's worth knowing that the MHRA approved a higher 7.2mg maintenance dose in 2026, following evidence that some people respond better at the higher level. That option is discussed in detail on our page on semaglutide plateauing over time. Whether it's appropriate for you is a clinical decision, the prescriber needs to review your full picture first, including how much weight you've lost, any side effects and any changes in your health status.

There's also a smaller group of people for whom semaglutide simply produces a limited response regardless of dose or adherence. The deeper look at why Wegovy doesn't work for some people covers the evidence on individual variation in GLP-1 response, including what the clinical literature says about predictors of lower response. According to NHS guidance on semaglutide, if you haven't lost at least 5% of your body weight after six months on the maintenance dose, your prescriber should review whether continuing makes sense. That review conversation (not self-discontinuation) is the right next step.

Step 4: Have a real clinical conversation

Reading pages like this one is useful, but it has a ceiling. The question of why Wegovy isn't working in your specific case involves your dose history, your adherence pattern, your weight trajectory over time, your other medications, and your wider health picture. No article can substitute for a prescriber looking at all of that together.

If you're partway through treatment and feeling stuck, our guide to what to do when Wegovy isn't working for you goes into more depth on the clinical pathways available, and the FAQs cover some of the questions that come up most often in aftercare conversations. If you want a clinical eye on your situation specifically, speak to our prescribers, every consultation is reviewed by a GPhC-registered Independent Prescriber, not software.