Wegovy Week 2: What Most People Experience

Step 1: where week 2 sits in the Wegovy schedule

Wegovy's titration ladder starts at 0.25 mg once weekly. This opening phase lasts four weeks, so week 2 of wegovy falls squarely within a period designed for your system to acclimatise, not for rapid appetite suppression. Novo Nordisk and the prescribing guidance are clear on this: the 0.25 mg dose exists to reduce early side effects, and it is not considered the maintenance level. The schedule then moves to 0.5 mg, 1.0 mg, 1.7 mg, and finally 2.4 mg, each step held for roughly four weeks under prescriber guidance. A full breakdown of what changes at each stage helps put week 2 in context, at this point, you are at the very beginning of a journey measured in months, not days.

One thing worth knowing: some people feel very little at 0.25 mg. That is not a sign the medicine is not working. It is the dose doing exactly what it was designed to do.

Step 2: what side effects typically look like in week 2

Week 2 on Wegovy is when gastrointestinal symptoms are most likely to be noticeable, if they appear at all. Nausea is the most commonly reported, usually mild, often triggered by eating too quickly, too much, or anything greasy. Constipation affects some people; others find the opposite. Burping, indigestion and a general sense of fullness after small amounts are all recognised patterns. The NHS's patient information on semaglutide lists these GI effects alongside headache, dizziness and injection-site reactions as the most frequently reported.

A question our prescribers hear most weeks at this stage: "Is it normal to feel sick but not lose any weight?" Yes, it is entirely normal. The nausea and the weight loss do not necessarily arrive together. The appetite-reducing effect of semaglutide builds over weeks as the dose increases; the GI adjustment often happens first. Eating smaller portions, staying well-hydrated, and avoiding fatty meals in the hours after your injection can help. If symptoms are severe or persistent, contact your prescriber rather than stopping the medicine yourself.

For anything urgent (severe stomach pain that extends to the back, with or without vomiting) seek medical help promptly. The MHRA highlighted acute pancreatitis as a known, if infrequent, side effect of GLP-1 medicines in a January 2026 Drug Safety Update, and that symptom pattern is the one to act on quickly.

Step 3: weight change (or the absence of it) at week 2

Most people do not see a meaningful number on the scales in week 2. Any early shift is usually attributable to fluid changes or a modest reduction in food intake rather than the sustained fat loss the medicine eventually produces. The clinical trial evidence that supports Wegovy's UK licence (STEP 1, published in the New England Journal of Medicine) tracked outcomes over 68 weeks at the full 2.4 mg maintenance dose. Significant average weight reduction in that trial was around 15%; week 2 is not where that picture is built.

If the timescales feel slow, it is worth reading how long Wegovy typically takes to work, the honest answer is that most people reach their maintenance dose around month five, and meaningful body-weight change is measured from that point. Early impatience is understandable. It does not mean anything is going wrong.

For those tracking closely, what to expect at the two-week mark covers this window in more detail, and the expected pace of weight loss on Wegovy puts the long-term curve in plain numbers.

Step 4: practical things to do (and avoid) in week 2

Practically speaking, week 2 is a good time to establish habits that support the rest of the course. Keep a rough food diary, not to count calories obsessively, but to notice which meals trigger nausea so you can adjust. Protein adequacy matters; as appetite falls over subsequent weeks, people sometimes under-eat, and muscle mass is worth protecting. The NHS guidance on healthy weight and lifestyle alongside treatment is a reasonable starting point for diet and activity basics.

Store your pen in the fridge at 2 to 8°C and check the Patient Information Leaflet for the exact room-temperature window if you need to take it out before injecting. Rotate your injection site each week, abdomen, thigh, or upper arm. And if you are taking the oral contraceptive pill alongside semaglutide, note that NHS guidance does not flag the same absorption interaction seen with tirzepatide, though any concerns are worth raising with your prescriber.

Thinking ahead: week 3 on Wegovy is still part of the same 0.25 mg phase, while week 4 is when many people begin to notice the first real appetite shift ahead of the first dose increase. The full Wegovy treatment guide covers what to expect across the complete course, and the cost of private Wegovy treatment in the UK is explained plainly for those weighing up their options.

If you have not yet started and are considering whether Wegovy is the right route for you, speaking to our prescribers is the first step, a free consultation reviewed the same day by a GPhC-registered clinician, with no obligation to proceed.