Wegovy Instructions: What Most People Get Wrong Before They Even Start

The biggest misconception: Wegovy's dose ladder is about comfort, not caution

Many people arrive at the starting dose expecting quick results, then feel disappointed, or, equally, press for a faster increase because they've read about the higher doses online. Both reactions come from the same misunderstanding. The gradual escalation from 0.25 mg through to the 2.4 mg maintenance dose isn't a slow drip of medicine being withheld from you. It's a physiological settling-in period. GLP-1 receptor agonists slow gastric emptying and alter hunger signalling in ways the gut needs time to adjust to. Rushing the schedule doesn't accelerate results; it reliably amplifies nausea, vomiting and the kind of early drop-out that leaves people worse off than if they'd been patient. The NHS medicines guidance on semaglutide is clear that each dose step is held for approximately four weeks before any increase, and your prescriber may advise staying at a particular dose longer if side effects are still noticeable. Think of the first several months less as treatment and more as preparation. The body catches up. Most people find the GI side effects ease meaningfully after the first week or two at any new dose. If they don't, that's the conversation to have with your clinical team, not a reason to push the dose up faster.

Injection technique: the details that actually make a difference

The pen does most of the work, but a few things are entirely in your hands. Inject into subcutaneous tissue (the layer of fat just beneath the skin) at one of three sites: the abdomen (at least a few centimetres from the navel), the front of the thigh, or the outer upper arm. Rotating between sites each week reduces the risk of lumps or skin changes at any one spot. Remove the pen from the fridge and let it sit at room temperature for a few minutes before injecting; cold medicine is more uncomfortable and can slow absorption. Clean the site with an alcohol swab, let it dry fully, then press the pen flat against your skin and hold it there for the full count after the click, lifting early is one of the most common reasons for incomplete dosing. If you notice the injection window isn't clear after the dose is delivered, contact your pharmacy or clinical team rather than re-dosing. You can read more about step-by-step Wegovy directions, including what to check before each injection, on the dedicated directions page.

Timing, missed doses and what to do when the week goes off-script

Wegovy is injected on the same day each week. You can shift the day by a day or two if something comes up (travel, illness, a busy week) as long as the gap between injections stays at least four days. If you miss a dose entirely and the next scheduled injection is more than two days away, take it as soon as you remember. If it's two days or fewer until your next dose, skip the missed one and carry on with your usual schedule. Never double up. This guidance comes directly from the NHS patient information for semaglutide, and your Patient Information Leaflet will confirm it. On the question of what to eat and drink alongside treatment: there's no prohibited food list, but a reduced-calorie diet and increased physical activity are part of the licensed indication. Many people find their appetite genuinely falls away, especially after several months at maintenance dose, and that adequate protein and hydration become the practical priorities. Our guide to vitamins alongside Wegovy covers the nutritional gaps worth watching. If you're considering whether Wegovy or tirzepatide (Mounjaro) is the better fit for your situation, the Wegovy comparison page lays out the head-to-head evidence clearly.

Side effects: what to manage at home and when to call for help

The most common side effects are gastrointestinal (nausea, loose stools, constipation, indigestion and burping) and they're most likely in the first week or two after a dose increase. Eating smaller portions, avoiding very fatty or sugary foods and not lying down immediately after meals all help. These effects typically settle. What shouldn't be managed at home is severe, persistent stomach pain that radiates to the back, with or without vomiting; that's a recognised symptom of acute pancreatitis, which the MHRA flagged as a known but infrequent risk in its Yellow Card safety communications, and it warrants urgent medical attention. The same applies to signs of a serious allergic reaction, or any significant swelling around the face or throat. Dehydration from prolonged vomiting or diarrhoea is a more everyday concern, staying hydrated and letting your clinical team know if GI symptoms are severe enough to affect your ability to eat or drink is sensible practice. If you have questions about specific contraindications for Wegovy (including medicines that interact with it or health conditions that may affect suitability) that page covers them in detail. For a broader overview of who Wegovy is licensed for, the Wegovy eligibility guide sets out the criteria clearly. And if you're weighing up whether Wegovy or Ozempic serves your situation, the Wegovy vs Ozempic comparison clarifies the licensing distinction that catches many people out. You can also explore the full range of weight-loss treatments available through nume to see how Wegovy fits alongside other licensed options.