Wegovy pen images: what to expect when your pen arrives

What the Wegovy pen actually looks like

The Wegovy pen is roughly the size of a thick marker pen, easy to hold, designed to be used single-handed. The body is white or off-white plastic, with a coloured band near the dose window that corresponds to strength. At one end sits the needle cap, which you remove immediately before injecting; at the other is the injection button, usually a contrasting colour so it's impossible to confuse with the cap end. A small inspection window lets you see the clear liquid inside.

Each pen is pre-filled and pre-set. There is no dose dial. The strength is fixed at manufacture, which is why your pharmacist dispenses a new pen at each stage of your titration rather than you adjusting anything yourself. A closer look at the Wegovy pen's design and components explains how those fixed-dose mechanisms work in practice.

The label on every pen states the dose in milligrams, the batch number, and the expiry date, and if you want to understand exactly how much solution each pen contains, our guide to Wegovy pen ml measurements breaks that down clearly. Before you inject, those three seconds of checking are worth forming as a habit. Our prescribers at nume send patients a welcome guide alongside their first prescription precisely because that visual check tends to be the thing people overlook.

Reading the colour-coding and dose markings

Novo Nordisk uses distinct colour-coding across the Wegovy range so that the 0.25 mg starter pen is visually different from the 1.7 mg or 2.4 mg maintenance pens. This matters practically: if you or anyone else picks up the wrong pen, the label and the band should make the mismatch obvious before anything happens.

The dose window (a small rectangular cutout in the barrel) shows the semaglutide solution. The liquid should be clear and colourless to slightly yellow. Any cloudiness, visible particles or discolouration means the pen should not be used. Report a suspect pen to your prescriber and to the MHRA via the Yellow Card scheme, which exists for exactly this kind of product quality concern.

People sometimes ask whether the 1 mg pen looks different from a 2.4 mg one, it does, by both label and colour-band. The 1 mg Wegovy pen page covers what that specific strength looks like in more detail. What stays the same across the range is the overall form factor: the same push-button mechanism, the same needle-attachment point, the same disposal process.

Choosing where and how to inject, what the instructions show

The pen is used at three sites: the abdomen (at least a few centimetres from the navel), the front of the thigh, or the upper outer arm. Rotating between sites each week reduces the chance of localised skin irritation. The NHS semaglutide guidance confirms these sites and gives patient-level detail on technique that complements the leaflet in your box.

The injection itself is straightforward once you've seen the process. Remove the pen cap, attach a fresh needle (covered needles click into place; remove the outer and inner needle shields), place the pen against your skin at a 90-degree angle, press and hold the button until the injection is complete, the window typically changes colour or a click signals the end. The whole process takes under a minute. A full walkthrough of each step is on our how to use the Wegovy pen page, which many patients keep open on their phone the first couple of times.

Used needles must go directly into a sharps bin, never the general household bin. A 1-litre sharps container is the standard size for home use and is accepted by most GP surgeries and pharmacies for disposal.

Storage, travel and what to do if the pen looks different from expected

Wegovy pens are refrigerated at 2–8°C. In practice, they sit well in the fridge door, though away from the freezer compartment, because freezing damages them. If you've just returned from a weekend away and kept the pen in a cool bag, check the leaflet for the exact room-temperature window permitted; that detail varies and the leaflet is the authoritative source, not any website.

Travelling with the pen raises questions about airport security, what to carry on a plane, and whether the temperature rules change. Flying with your Wegovy pen covers that specifically. Most people find the process simpler than they expected once they know the rules.

If a pen looks different from what you received previously (different label layout, different font, a seal that feels tampered with) treat it as suspect. The MHRA has documented cases of counterfeit weight-loss pens in circulation; genuine pens arrive through the licensed UK supply chain and should look consistent with your previous dispenses. If something seems off, contact the pharmacy before using it. For an overview of what's involved in starting treatment, including the cost of Wegovy through a private prescription and what's typically included in a service fee, those questions are worth settling before your first consultation.

If you'd like a prescriber to review your eligibility for semaglutide, start your free consultation with our clinical team. A GPhC-registered prescriber reads every submission personally on the day it arrives.