How to Inject Wegovy in Your Stomach Safely and Confidently

Before you press anything: the preparation decisions

Rushing past preparation is where most discomfort starts. Take the pen out of the fridge around 30 minutes before you plan to inject, skin meeting a refrigerator-cold pen produces a sharper sting than the medicine itself warrants. While you wait, wash your hands thoroughly. Check the pen window: the liquid should be clear and colourless. If it looks cloudy, discoloured or contains visible particles, do not use it. Contact your prescriber or pharmacy straight away.

Choosing your exact site within the stomach matters more than most people expect. Avoid the 5 cm ring immediately surrounding the navel, skin there is thicker and more sensitive. Also avoid any area that is bruised, broken, or has raised scar tissue from a previous injection. The lower-abdomen zone, roughly the area between your hip bones and below your navel, tends to be the most comfortable for the majority of people. If you want a visual walkthrough before your first attempt, our step-by-step video guide covers the pen's mechanism in real time.

If you have been wondering whether the stomach or thigh is the better site for you personally, the honest answer is that absorption and tolerability are broadly similar between licensed sites; the best site is the one you can access consistently and rotate reliably.

The injection itself: what to do, step by step

Clean the skin with an alcohol swab and let it dry fully, injecting through wet skin pushes alcohol in with the dose, which stings. Once dry, pinch a fold of skin between your thumb and two fingers. This lifts the subcutaneous fat away from the muscle underneath, which is exactly where semaglutide needs to land. Hold the pinch firmly but without whitening the skin.

Place the pen cap-end down, flat against the skin at a 90-degree angle. Press and hold firmly, you will hear and feel a click as the dose begins to release. Keep the pen pressed down and count slowly to 10. Releasing before 10 seconds means you may not receive the full dose. When you lift the pen away, the needle retracts automatically and a yellow indicator confirms the dose was delivered. Do not rub the site afterwards; rubbing can affect how the medicine disperses.

Dispose of the used pen in a proper sharps container, never in a household bin. NHS guidance and the patient information leaflet both specify that used pens must go into an approved sharps bin, which your local council or pharmacy can help you dispose of safely. For a deeper look at the full stomach-injection process, the detailed injection guide covers common technique errors and how to avoid them.

Rotating sites and the longer-term pattern

A single comfortable spot sounds appealing, but returning to the same square centimetre each week creates lipohypertrophy, a localised thickening of fat tissue that slows absorption and can make injections less effective over time. A simple system prevents this: divide your abdomen mentally into four quadrants and move one quadrant along each week. After four weeks you've done a full circuit. Some people mark a small calendar note; others use the day of the week as a prompt. Either approach is fine so long as the rotation is consistent.

The guide to stomach injection sites maps this rotation in detail, with diagrams. If you are giving the injection to yourself for the first time and want to understand how the technique compares when you move to the thigh or upper arm, the semaglutide injection overview explains the differences. Most people find a rhythm within two or three doses and the process becomes routine quickly.

The pen itself, by the way, arrives in plain unbranded packaging, DPD delivers with full tracking, so you are not waiting in without knowing when it will come. Inside is the Wegovy pen, designed so the needle is never visible before, during or after use. It is a genuinely well-designed piece of kit, and knowing that before your first injection takes some of the apprehension away.

Side effects at the injection site, and when to take them seriously

Mild redness, slight bruising or a small firm area at the injection site are common and usually settle within a day or two. They are not a reason to stop treatment; they are a signal to fine-tune your rotation. If the same spot is being used repeatedly, the reaction will keep occurring there. Move on.

A harder, persistent lump that does not resolve within a week, spreading redness, warmth or any sign of infection warrants a call to our support team or your GP. Serious injection-site reactions are uncommon, but they should not be waited out. The NHS semaglutide page lists injection-site reactions in full alongside the broader side-effect profile, including the gastrointestinal effects (nausea, diarrhoea and constipation) that are the more frequently discussed part of early treatment. If you have broader questions about Wegovy's effects, the Wegovy overview covers the clinical picture in full.

When you are settled into treatment and thinking about what comes next (including dose progression and ongoing clinical review) a free consultation with our prescribers is the place to start. Speak to our prescribers about whether Wegovy is right for you, or what your next steps look like if you are already on treatment.