Wegovy spots to inject: which sites work, and why rotation matters

Which three sites can you use for a Wegovy injection?

Wegovy is injected subcutaneously, into the layer of fatty tissue just beneath the skin, not into a muscle or a vein. The three sites licensed for use are the abdomen, the front of the thigh, and the outer upper arm. Each location has enough subcutaneous fat in most adults to allow the medicine to be absorbed gradually and predictably.

The abdomen is the site most people start with. The area to aim for is at least 5 cm (roughly two finger-widths) away from the navel, anywhere around the lower belly where you can pinch a fold of skin comfortably. This zone is easy to reach with one hand, which matters when you are injecting alone.

The front of the thigh works well too, roughly the middle section of the outer thigh, avoiding the inner leg and the knee. Some people find it slightly easier to see what they are doing here compared with the abdomen.

The outer upper arm is the third option, though it can be harder to reach without help. If you are using this site, our guide on finding the best spot for your Wegovy injection explains how propping your arm against a surface and relaxing the muscle first makes the process considerably easier. You can read more about the mechanics in our step-by-step guide to injecting Wegovy.

One quick check worth doing before each injection: press gently on the planned site to confirm there are no lumps, tender areas, or hardened patches. If the skin feels unusual, move a few centimetres away or switch to a different site entirely that week. It takes less than thirty seconds and can prevent you injecting into tissue that is already irritated.

Why does rotating your Wegovy injection spots matter?

Injecting repeatedly into the same patch of skin causes a reaction called lipohypertrophy, a build-up of thickened, fibrous tissue that develops when the same cells are stimulated too often. It looks and feels like a firm, slightly raised area under the skin. Beyond being uncomfortable, it is a clinical problem: semaglutide absorbed through lipohypertrophic tissue tends to be irregular, which can blunt the medicine's effect.

Rotation solves this systematically. The principle is to avoid returning to any single spot for at least four weeks, ideally longer. Within a given site, you can shift position (a few centimetres up, down, or to either side) rather than always using the identical pinpoint. Think of the abdomen as a grid rather than a single target; you have a wide area to work with. Our page on injecting Wegovy in the same spot goes into further detail on what the evidence says about site fatigue.

A practical system many people find useful is to assign a rough schedule: left abdomen one week, right thigh the next, outer arm the week after, and so on. Writing the site in a notes app or on the pen's packaging makes the pattern easy to track without having to remember. Keeping a supply of alcohol swabs in the same spot as your pen means the cleaning step becomes automatic rather than an afterthought.

For a broader look at which sites tend to suit different people and why, the best spot for your Wegovy injection page compares each location in more detail.

Are there spots on the body you should avoid?

Yes, and the reasons are straightforward. Avoid any area where the skin is broken, scarred, sunburned, bruised, tattooed, or affected by a skin condition such as psoriasis or eczema. Scar tissue and tattooed skin absorb medicines unpredictably, and already-inflamed skin is more prone to reactions.

Keep well clear of the navel itself and the area immediately surrounding it, subcutaneous fat is thinner there, and the underlying tissue is less forgiving. Similarly, avoid the inner thigh, where veins are closer to the surface, and never inject into a vein or muscle deliberately.

Waistbands and tight clothing worn immediately after injection can press on the site and cause irritation; a brief pause before dressing is enough to avoid this. If you notice persistent redness, swelling, or pain at any injection site that does not resolve within a day or two, mention it at your next clinical review. NHS guidance on semaglutide lists injection-site reactions among the side effects to monitor, and they are generally mild and manageable when rotation is practised consistently.

For the detail on comparing sites side-by-side (including what clinical guidance says about the abdomen versus the thigh) see our page on Wegovy injection spots. And if you are still at the stage of deciding whether Wegovy is the right treatment for you, the Wegovy overview covers the full picture: licensing, evidence, and how private prescribing works in the UK.

What should a safe injection routine look like?

A consistent routine makes injections straightforward rather than stressful. Before you begin, wash your hands thoroughly. Clean the chosen site with an alcohol swab and allow it to dry completely, injecting through wet skin can carry bacteria into the tissue. Remove the pen cap, check the medicine window looks clear and colourless (or slightly yellow, both are normal), and dial to the correct dose as set by your prescriber.

Pinch a fold of skin, insert the needle at a 90-degree angle, press the injection button, and hold for the count of five before withdrawing. This dwell time helps ensure the full dose is delivered rather than leaking back along the needle track. Once done, apply gentle pressure with a clean swab, no rubbing, which can disperse the medicine away from the intended site.

Dispose of the used needle safely in a sharps container immediately; never recap used needles. Store your pen in the fridge as directed; refer to the Patient Information Leaflet for the exact room-temperature window if you need to travel, as this varies and we would not want to quote a figure that conflicts with the leaflet accompanying your specific pen.

If you have questions about your technique (or about whether Wegovy is clinically appropriate for you) our prescribers are here. You can find out more about how we work on the about us page, and when you are ready, speak to our prescribers through a free consultation. Every review is carried out by a GPhC-registered Independent Prescriber, and the cost of treatment, including what is covered, is shown on our weight-loss treatments page.