Wegovy: Pros and Cons for People Already on It

Wegovy contains the active substance semaglutide, a GLP-1 receptor agonist. It works by acting on appetite-regulating pathways in the body, which many people describe as reducing "food noise" — the constant mental pull towards eating — and increasing feelings of fullness. These effects are commonly reported benefits for those already prescribed the medicine.

Commonly reported pros

• Reduced appetite: Many people find they feel full sooner and think about food less, which can make sticking to a calorie-conscious approach easier.
• Once-weekly dosing: A single weekly injection rather than a daily pill means fewer daily decisions around the routine.
• Gradual dose titration: Wegovy is typically started at a low dose and adjusted over time by a prescriber, which many people find helps their body adapt.
• Tracking momentum: People already on Wegovy often report the sense of progress itself becoming motivating when they monitor weight, measurements, and energy together.

Commonly reported cons

• Gastrointestinal side effects: Nausea, constipation, diarrhoea, indigestion, and reflux are among the most frequently reported side effects, particularly after a dose adjustment. These often ease over time for many people, but can be disruptive.
• Injection routine: Weekly self-injection is straightforward for many, but managing sites, rotation, and pen storage takes some organisation.
• Individual variation: Results and tolerability vary considerably from person to person — what works well for one individual may feel difficult for another.
• Requires prescriber involvement: Dose decisions, adjustments, and suitability checks all sit with a healthcare professional, which means staying engaged with your prescriber throughout.

If you are weighing up how Wegovy compares with tirzepatide, the pros and cons of Mounjaro covers a similar breakdown for that medicine — though any decision about which medicine is right for you belongs entirely with your prescriber. You can also find a broader overview on the Wegovy information page, and if you are interested in how GLP-1 medicines interact with specific health conditions, the page on Mounjaro and endometriosis gives one example of how these conversations with a prescriber might look. For broader context on GLP-1 medicines, see our Mounjaro hub.

Any side effect that is severe, persistent, or worrying should prompt a conversation with your healthcare professional promptly — do not wait for your next scheduled appointment if something feels wrong. If you experience any unexpected symptoms, you can also report them to your national pharmacovigilance scheme (such as the UK's Yellow Card scheme or its equivalent in your country).

One of the most practical things you can do on a Wegovy journey is keep a clear log of both how you feel and how you are progressing — because the two are often connected in ways that only become visible over time.

GLP Trackr's side-effect tracker is particularly useful here. Rather than trying to remember whether nausea was worse the week after a dose change, or whether fatigue improved once you increased your protein intake, you can log symptoms day by day and let the app surface patterns across your own data. That kind of structured record is genuinely useful to bring to your prescriber — the app's doctor report feature can help you summarise your journey clearly for those appointments.

Beyond symptoms, the weight and body tracking tools — including week-by-week charts and measurements — help you see progress that the scale alone might obscure. Many people on Wegovy find that progress is not always linear, and having a fuller picture makes it easier to stay motivated through slower weeks.

GLP Trackr is a tracking and journaling companion — it is not a substitute for clinical advice, and any questions about your dose, your side effects, or whether Wegovy is working well for you should always go to your prescriber or doctor first.

Start logging your Wegovy journey — side effects, weight, meals, and mood — all in one place. GLP Trackr is free to try for 7 days on the App Store and Google Play.