How to Take Wegovy Shots: Injection Technique, Sites and Timing

The first time you pick up the pen

Picture a Sunday evening. You have just taken the pen from the fridge and set it on the counter. It needs to reach room temperature before you inject, most people leave it for 15 to 30 minutes, though you should follow the timing in your Patient Information Leaflet exactly rather than going by a general rule. Rushing a cold injection can make it more uncomfortable than it needs to be.

Wash your hands thoroughly. Take a fresh needle from the pack, a new needle goes on before every single injection, not just the first. Replacement needles are available if you are running low. Attach the needle cap-end first, then remove both caps. Clean the chosen injection site with an alcohol swab and allow the skin to dry completely before you inject; injecting into wet skin can sting.

Pinch a fold of skin gently, insert the needle at a 90-degree angle and press the injection button. Hold it in place for the count the leaflet specifies (typically several seconds) then release and withdraw the needle. Do not rub the site afterwards. The used needle goes straight into a sharps container, never into household waste. That is the whole process. Most people find it takes less than two minutes by their second or third week.

If you are a visual learner, a step-by-step Wegovy injection walkthrough may be useful alongside this guide.

Where on your body, and why rotating matters

Three injection sites are licensed under the Wegovy SmPC: the abdomen (keeping at least two inches away from your navel), the front of the thigh and the outer upper arm. Each is equally valid; the choice mostly comes down to what is easiest for you to reach and pinch comfortably.

Rotating between sites (and between different spots within each site) is not optional detail. Injecting repeatedly into the same small patch of skin can cause lipohypertrophy, a harmless but lumpy fatty change in the tissue that slows absorption. A simple approach is to divide each site into a grid in your mind and move systematically around it week to week. Some people keep a brief note on their phone; others rely on a pattern they can remember. The method matters less than the consistency.

There is one interaction worth knowing if you are also using tirzepatide or comparing the two medicines: the Wegovy injection guide covers site selection in more detail, and the semaglutide vs Ozempic context page explains why these pens are not interchangeable despite sharing the same active ingredient.

The NHS semaglutide page also covers injection sites in plain language if you want a second source to read before your first dose.

What your body is likely to do in the first few weeks

Nausea is the side effect people mention most, and it is worth being honest: it can be noticeable, especially after your first injection and after each dose increase. It tends to ease within a week or two as your body adjusts. Keeping meals smaller and lower in fat during this period, eating slowly, and staying well hydrated all help. Diarrhoea, constipation, burping and indigestion are also reported; they share the same general pattern of being worse early and fading with time.

One thing to take seriously: if you develop severe stomach pain that radiates through to your back, with or without vomiting, stop injecting and get urgent medical help. This could indicate acute pancreatitis, which is a known but uncommon side effect of GLP-1 medicines. The MHRA highlighted this in a Drug Safety Update in January 2026, and it is the reason your prescriber will have asked about your medical history before approving treatment.

Other signals to act on quickly: signs of a serious allergic reaction (swelling, difficulty breathing, rapid heartbeat), symptoms of gallbladder trouble (severe pain in the upper right abdomen, fever, jaundice), or significant mood changes. For anything less acute (persistent nausea, questions about whether a missed dose matters) the priority aftercare team at nume's support line is available seven days a week.

You can also read about semaglutide administration more broadly if your question stretches beyond the pen technique itself.

Missed doses, storage and the detail people forget to ask about

If you forget your weekly injection, the guidance in your Patient Information Leaflet takes precedence over anything written here, dosing windows and what to do when they are missed depend on how much time has passed, and the right answer is specific. As a general principle: do not double up. One missed dose is rarely a clinical problem; two injections close together could increase side-effect risk. When in doubt, your prescriber or pharmacist should advise.

Storage is straightforward but unforgiving if ignored. Keep the pens refrigerated between 2°C and 8°C before first use. Do not freeze them and do not leave them in a hot car or in direct sunlight. The SmPC lists a limited window for room-temperature storage once a pen is in use, check the exact figure in your leaflet rather than relying on any general guidance, including this page's.

One thing that catches people out: the pen is for single-patient use only. Once a needle has been attached and removed, that pen is yours and should not be shared. This is not just a hygiene point, it is a safety one.

For a broader picture of what weekly semaglutide treatment looks like from month one onwards, the how to take Wegovy guide covers the longer arc. And if you are still working out whether this treatment is the right fit, exploring your treatment options is a useful starting point before speaking to a prescriber.

If you have read this far and you are ready to talk through your situation, our prescribers are there for exactly that. Speak to our prescribers through a free consultation, same day, no waiting list, reviewed by a real clinician.