Wegovy (Semaglutide): What People Already Prescribed It Need to Know

Semaglutide, the active substance in Wegovy, acts on GLP-1 receptors involved in appetite regulation. Many people prescribed it report a reduced sense of hunger and less preoccupation with food — sometimes described as quieter “food noise” — alongside a feeling of fullness after smaller meals. These effects are commonly attributed to the way GLP-1 receptor agonists influence appetite-signalling pathways and slow gastric emptying.

Wegovy is supplied as a pre-filled pen and is taken once a week, typically at a starting dose that your prescriber adjusts over time. The final maintenance dose is 2.4 mg semaglutide, though the schedule for reaching that dose is determined individually by your prescriber, not by a fixed timetable. According to information published on the electronic Medicines Compendium, the dose escalation period is designed to help the body adjust gradually.

What the injection involves

Wegovy is injected subcutaneously — into the skin — at sites such as the abdomen, thigh, or upper arm. Rotating injection sites each week is generally recommended to reduce the chance of localised skin reactions. Your prescriber or the patient information leaflet that came with your pen is the right source for guidance on technique and storage.

If you are new to Wegovy or want a broader overview of the medicine, the pages on Wegovy as a weight-loss medicine and what Wegovy is used for offer useful context. For information specific to the 2.4 mg maintenance dose, see our page on semaglutide 2.4 mg.

Commonly reported side effects

The most commonly reported side effects with semaglutide include nausea, vomiting, diarrhoea, constipation, and indigestion — particularly in the early weeks or after a dose increase. These often ease as the body adjusts, but experience varies from person to person. If any side effect is severe, persistent, or concerns you, contact your healthcare professional promptly. Any suspected side effects can also be reported through your national scheme (such as the UK Yellow Card scheme) or directly to your healthcare team.

Staying consistent with a once-weekly injection schedule, monitoring how you feel, and understanding your own patterns over time are all meaningful parts of a Wegovy journey — and that is exactly what GLP Trackr is built to help with.

The most immediately useful feature for Wegovy users is side-effect tracking. You can log symptoms like nausea, fatigue, or digestive changes directly in the app, and over time it surfaces patterns that can be genuinely useful to bring to your next prescriber appointment. Rather than trying to recall how you felt three weeks ago, you will have a clear, dated record ready to discuss.

Alongside that, the app’s dose and injection logging means every shot is recorded — date, dose strength, and injection site — so you never lose track of where you are in your schedule. The injection-site rotation feature keeps a history of which sites you have used and suggests where to inject next, taking the guesswork out of rotation.

GLP Trackr also supports the broader picture: weight and measurement tracking, a morning check-in for mood and energy, and food logging with an AI photo-scan option for days when appetite is low and calorie awareness still matters. All of it lives in one place, making your data easier to review and share.

GLP Trackr is a companion tool for people already on their journey — it is not a substitute for the guidance of your prescriber or doctor, who knows your full medical history and should always be your first point of contact for any clinical questions. You can also explore how Wegovy compares to tirzepatide-based treatment on our Mounjaro hub.

Ready to bring some structure to your Wegovy journey? Download GLP Trackr on the App Store or Google Play and explore everything free for your first 7 days.