Wegovy Injections: What to Know About Sites, Rotation and Staying on Track

Wegovy is administered as a subcutaneous injection — meaning it goes into the fatty tissue just beneath the skin rather than into a muscle. According to the electronic Medicines Compendium (eMC), the recommended injection sites are the abdomen (avoiding the area directly around the navel), the front of the thigh, or the upper arm. Each of these areas has enough subcutaneous tissue to allow the medicine to be absorbed properly.

Rotating your injection site

Rotating sites between injections is widely recommended because injecting repeatedly into the same small spot can cause localised changes to the tissue — sometimes described as hardening or lumpiness — which may affect how well the medicine is absorbed. A simple approach is to move to a different area of the body each week, and within a single area (like the abdomen) to shift position slightly each time.

Your prescriber or doctor will give you personalised guidance on technique and site selection, and the patient information leaflet (PIL) that came with your pen is the definitive reference for instructions specific to your device. If anything about your injection site looks or feels unusual — persistent redness, swelling, or pain — mention it to your healthcare professional promptly.

Keeping track across a long course of treatment

Over weeks and months on Wegovy, it becomes genuinely difficult to remember which site you used last week, let alone the pattern across recent doses. Many people find that building a simple log — noting the site alongside the date and dose — makes rotation automatic rather than guesswork. For a broader look at how injectable weight-loss medicines work in practice, see our guide to weight loss injections.

The most immediately useful feature for injection management in GLP Trackr is the injection-site tracker. Each time you log a dose, you record which site you used — abdomen, thigh, or upper arm — and the app keeps a rotation history. Rather than trying to remember what you did last week, you can check the app and see exactly where your last injection went, so you always know where to go next.

Alongside site tracking, the dose-logging feature stores the date, time, and strength of every injection in one place. Over the weeks, this builds into a clear record of your treatment history — something that can be genuinely useful to bring to a prescriber appointment or review. If you are also curious about how different injectable options compare in terms of their tracking needs, our overview of comparing weight loss injection options and our page on managing your weight loss injection routine are worth reading alongside this one.

Dose reminders are another feature worth switching on early: a gentle weekly nudge means a dose is much less likely to slip through a busy week unnoticed.

GLP Trackr helps you record and organise the information about your injections — it is not a substitute for the guidance of your prescriber or doctor, and any questions about technique, site reactions, or your injection schedule should always go to your healthcare professional. If you notice a side effect you want to report formally, you can do so through your national reporting scheme (such as the UK's Yellow Card scheme) as well as raising it with your care team.

Ready to take the guesswork out of rotation? Download GLP Trackr on the App Store or Google Play — your injection history, site suggestions, and dose log are all free to try for seven days.