Not Losing Any Weight on Wegovy — What's Actually Going On

Is it too early to expect results from Wegovy?

This is the question worth asking first. The Wegovy titration schedule starts at 0.25 mg for four weeks, then steps to 0.5 mg, then 1.0 mg, then 1.7 mg, before reaching the 2.4 mg maintenance dose, a process that takes roughly 16 to 20 weeks in total. At the lower rungs, most people report only mild appetite reduction. That's by design: the gradual increase exists to minimise nausea and give the gut time to adjust, not to drive weight loss from day one. If you've been on Wegovy for a few weeks and the number on the scale looks identical, check which dose you're currently on before concluding the medicine isn't working.

The NHS medicines guidance on semaglutide confirms that weight loss typically becomes more noticeable as the dose increases toward maintenance. The STEP 1 clinical trial (68 weeks, 2.4 mg semaglutide against placebo) reported an average body-weight reduction of around 15% across its participants, but that average accumulated over more than a year. Weeks two or three at a starter dose sit at the very beginning of that curve.

If you're at maintenance dose and several months in with no movement at all, that's a different picture and worth raising with your prescriber, there's a section below on what might still be happening at that stage. You can also find a practical breakdown of expected timelines on our page covering how long Wegovy takes to work.

Could eating patterns be offsetting the medicine's effect?

Semaglutide slows gastric emptying and acts on appetite-regulating centres in the brain, but it doesn't make poor eating habits irrelevant. One pattern that surprises people: the medicine reduces hunger, they eat less at mealtimes, but high-calorie drinks, snacks taken out of habit rather than hunger, or large portions of calorie-dense foods can quietly absorb the deficit the medicine was meant to create.

There's a persistent misconception that Wegovy works regardless of diet, that you simply inject and the weight comes off. That isn't what the licence says, and it isn't what the trial evidence shows. Wegovy is licensed for use alongside a reduced-calorie diet and increased physical activity. The medicine makes it easier to maintain that combination; it doesn't replace it.

Protein intake is worth flagging here specifically. When appetite falls sharply, many people find they eat less protein, which can accelerate the loss of muscle mass alongside fat. That matters because muscle tissue burns more calories at rest. Keeping protein adequate while overall intake falls is something a prescriber or dietitian can help you plan for. The Wegovy treatment overview has more on what the medicine is designed to do alongside lifestyle changes.

What if you lost weight initially but have now stopped, is that a plateau?

A weight-loss plateau after an initial drop is one of the most common points at which people question whether Wegovy is still working. The body's response to sustained caloric restriction includes a downward adjustment in basal metabolic rate, essentially, it becomes more efficient and burns fewer calories to maintain the new, lower weight. This is a normal physiological adaptation, not a sign that semaglutide has become ineffective.

At a plateau, a few questions are worth reviewing with your prescriber: are you at the highest tolerated dose? Has anything changed in activity levels or sleep quality? Are stress or certain medications affecting weight regulation? The specific guidance on plateaus during Wegovy treatment covers these in detail.

If <5% weight loss has occurred after six months on the maintenance dose, NICE guidance recommends a clinical review to assess whether continuing is appropriate, that's a conversation your prescriber should initiate, and it's one of the reasons clinical oversight throughout treatment matters. For those wondering whether a different licensed medicine might suit them better, the treatment options overview sets out the alternatives.

When should you raise this with a prescriber rather than waiting?

Absolute absence of any weight change after reaching maintenance dose for eight or more weeks, or weight gain during treatment, should be discussed with your prescriber rather than waited out. There are also medical factors that can blunt the medicine's effect: untreated hypothyroidism, certain medications including some antidepressants and corticosteroids, and significant sleep disruption all have well-documented effects on weight regulation that sit alongside what semaglutide is doing. If you are finding that semaglutide is not producing the weight loss you expected, these underlying factors are often the first place a prescriber will look.

A prescriber can also check whether the supply chain question is relevant. Counterfeit semaglutide pens have been seized by the MHRA in significant quantities, fake pens have been found to contain the wrong substance entirely. If you sourced your treatment without a clinical assessment or from an unverified seller, that's worth raising. Our prescribers at nume review each repeat order before it's dispatched, which is part of how we catch these issues early; you can read about how the clinical team works on this page.

The broader picture on what drives a response to semaglutide, including individual variation, is covered across the related pages on why weight loss varies on Wegovy and, for anyone using Wegovy but finding the scales are not moving, the practical questions our prescribers hear most often on our FAQs page. If you're considering starting Wegovy or reviewing your current treatment with clinical support, start your free consultation and a GPhC-registered prescriber will review your case the same day.