Where to jab Wegovy: choosing and rotating your injection sites

Step 1, know where the three sites are and what makes each one practical

The Wegovy pre-filled pen is licensed for subcutaneous injection into three areas, as described in the NHS medicines page for semaglutide. The abdomen is the most commonly chosen spot: aim for the soft fatty tissue around the belly, keeping at least 5 cm away from the navel and well clear of the bony ridge of the hip. The front of the thigh (roughly the middle third of the upper leg) is a natural alternative if the abdomen is tender or bruised. The outer upper arm works too, though most people find it easier to use only when someone else is administering the injection, since reaching your own outer arm at the correct angle is awkward.

All three sites deliver the medicine into subcutaneous fat, which is where it needs to go. The goal is soft, pinchable tissue, not muscle, not a blood vessel. A question our prescribers hear most weeks is whether one site works better than another; the honest answer is that all three are equivalent in terms of how the medicine is absorbed, so the best site is whichever one you can consistently reach and rotate properly.

If you are exploring the broader picture of injecting Wegovy for the first time, that page covers the full technique from pen preparation to disposal.

Step 2, prepare the skin before you inject

Preparation is quick but matters. The skin should be clean and dry. Wiping the area with an alcohol swab and allowing it to air-dry completely before injecting reduces the risk of stinging and infection. Never inject into skin that is broken, sore, bruised, tattooed over an active site, or affected by a rash. Sunburned skin, areas with visible veins, and anywhere that feels hard or lumpy from a previous injection are also off-limits.

Cold skin can make the injection more uncomfortable. If you have taken the pen straight from the fridge, letting it sit at room temperature for a short time first is sensible, but always follow the storage guidance in your Patient Information Leaflet rather than leaving it out for longer than indicated. For detail on how long the pen can be kept outside the fridge, the pen storage guidance page covers this specifically.

There is no need to pinch the skin with most modern auto-injector pens, but check your leaflet, as technique guidance can vary slightly by pen design. Press the pen firmly and evenly against the skin at a 90-degree angle, then activate it.

Step 3, rotate sites systematically to protect your skin long-term

Rotation is not optional. Injecting repeatedly into the same small patch of skin causes lipohypertrophy: fatty, lumpy tissue that absorbs medicine less predictably and can become uncomfortable. The fix is a deliberate rotation pattern.

A simple method: divide each site into a loose mental grid of zones and move one zone along each week, cycling through the abdomen, thigh and arm over several weeks before returning to the start. Some people prefer a consistent pattern (abdomen for four weeks, thigh for four, arm for four); others rotate week by week. Either approach works as long as no single spot is used in back-to-back weeks.

If you are injecting into the thigh specifically, stay on the front-outer portion of the upper leg and avoid the inner thigh, where the skin is thinner and more sensitive. The same rule applies everywhere: if an area feels sore or looks different from the surrounding skin, skip it and move on.

Keeping a simple note on your phone (which site, which zone, which week) takes about five seconds and removes any guesswork. The Wegovy storage page pairs well with this one if you are building a routine around the pen.

A note on Wegovy and the treatment it sits within

Wegovy (semaglutide 2.4 mg, and now also available at 7.2 mg following MHRA approval in early 2026) is a prescription-only GLP-1 receptor agonist. Getting the injection site right is one part of making treatment work well; the wider picture (dose schedule, lifestyle changes, monitoring) is set by your prescriber. The Wegovy overview page covers the medicine as a whole, including the STEP 1 trial results and UK licensing, if that context is useful.

Wegovy is not the same medicine as Ozempic, even though both contain semaglutide. Ozempic is licensed for type 2 diabetes, not weight management; the injection-site guidance for the two differs slightly because the pens are different devices, so always use the leaflet that comes with your specific pen.

For anyone considering starting treatment, the cost and what is included in a private prescription is worth understanding before you begin. The weight-loss treatments overview explains the options and pricing context in plain terms. If semaglutide is not the right fit, your prescriber can discuss alternatives at consultation.

When you are ready to check whether Wegovy is clinically suitable for you, start a free consultation with our prescribers, a real clinician reviews every application the same day.