The Wegovy Pink Pen — What You're Actually Deciding

Why dose colour matters more than you might think

Wegovy pens are colour-coded precisely because the dose strengths look nearly identical in physical size. The pink pen (1mg) could easily be mistaken for the 0.5mg orange pen or the 1.7mg light blue pen if the only distinction were the label. Novo Nordisk's colour system gives patients, carers and pharmacists an immediate visual check. That matters most when a pen is pulled from the fridge door first thing in the morning before you've properly woken up.

The NHS semaglutide medicines page outlines the standard titration pathway: doses typically increase every four weeks, subject to how you've tolerated the previous step. Your prescriber decides the timing, if nausea or other side effects have been significant, holding at 1mg for longer is common clinical practice. Moving up too quickly rarely helps and often makes side effects worse.

For more on how the full pen range works together, the Wegovy pen overview covers each colour step and what it delivers.

What the 1mg step actually does in the body

Semaglutide is a GLP-1 receptor agonist, it mimics a gut hormone that signals fullness to the brain and slows how quickly food moves through the stomach. By 1mg, most people are past the adjustment phase of the lower starter doses. If you want a closer look at exactly what this dose involves, our page on the Wegovy 1mg pen covers the specifics in full. Appetite suppression tends to feel more consistent here, and the feeling of fullness after smaller portions becomes more reliable.

Clinical trial data from the STEP 1 study, published in the New England Journal of Medicine, showed an average weight reduction of around 15% over 68 weeks at the 2.4mg maintenance dose, the 1mg pen is a step towards that maintenance level, not the endpoint. Side effects at 1mg are still primarily gastrointestinal: nausea, loose stools, constipation and burping are the most common, and they generally ease as the body adjusts over the first week or two at each new dose.

If you're still exploring whether injectable treatment is the right fit, our weight-loss treatment overview compares the main licensed options available in the UK.

Injecting with the pink pen, the practical decisions

Each Wegovy pen, including the 1mg, is pre-filled and pre-set; there's no drawing up of liquid or manual dose selection. The injection is subcutaneous (into the fatty tissue under the skin) and the recommended sites are the abdomen, the front of the thigh, or the upper arm. Rotating sites with each injection reduces the small risk of skin thickening at a single spot.

Before injecting, clean the chosen site. Our alcohol swabs are kept by many patients alongside their pen for this purpose. Once the pen is pressed against the skin and the button is pressed, a click confirms delivery; hold it in place for ten seconds before removing. Used pens and needles need safe disposal, a sharps container is the right route, not a household bin.

Storage follows the same rule as all Wegovy pens: refrigerate at 2–8°C until use. The exact room-temperature window for pens in use is detailed in the Patient Information Leaflet, always follow that rather than any number quoted online. For a full step-by-step injection walkthrough, our guide to using the Wegovy pen covers preparation, technique and what to do if something goes wrong.

Getting the pink pen through a registered pharmacy

Semaglutide is a prescription-only medicine. That's not a formality, the dose you're on at any given point should reflect a clinical review of how your body has responded, not a fixed schedule you've set yourself. Prescription supply also means your medicine has come through a licensed UK supply chain, not an unknown route.

The MHRA Yellow Card scheme asks patients and healthcare professionals to report suspected side effects and, separately, any medicines that seem fake or substandard, both are useful safety signals. You can verify any online pharmacy on the GPhC register before placing an order. Sellers offering semaglutide pens without a prescription are operating outside UK law, and counterfeit pens have caused hospitalisations.

If you want to understand how private Wegovy supply is priced, our Wegovy access page explains the full process and what's included. For those curious about how Wegovy compares to other injection options, this page on semaglutide and Ozempic clarifies the important licensing distinctions. When you're ready to speak with a prescriber about your own situation, start your free consultation with our team, a real clinician reviews your answers, not software.