What a semaglutide kit actually contains — and what to check when yours arrives

Step 1, the prescription process that precedes any pen

Before a single pen leaves the pharmacy, a real clinical decision has to happen. Wegovy is a prescription-only medicine, which means the supply chain starts with a prescriber reviewing your medical history, current weight, BMI, and any conditions that might affect suitability. At nume, a GPhC-registered Independent Prescriber reads every consultation personally, the same day it's submitted. No automated approval, no rubber-stamping. If you'd like to understand exactly how that process works, the Wegovy treatment overview sets it out clearly.

This step matters for a practical reason: what the pen contains (semaglutide at a specific starting strength) is decided at the prescribing stage. You don't choose the dose yourself; the prescriber matches it to where you are in the titration schedule. Patients new to treatment typically begin on a lower-strength pen and move up every four weeks or so, always under clinical oversight. The semaglutide information page has a plain-English summary of how that escalation works across the treatment journey.

A question our prescribers hear regularly: "Can I just order the 2.4 mg pen from the start?" The answer is no, and that's by design. The titration schedule exists to give your body time to adjust and to reduce early nausea. Jumping straight to the maintenance dose makes side effects significantly more likely without adding any clinical benefit.

Step 2, what's physically inside the box when it arrives

A dispensed Wegovy kit, as supplied through a GPhC-registered UK pharmacy, contains the pre-filled injection pen itself, the manufacturer's Patient Information Leaflet (PIL), and any pharmacist labelling required by UK law. There are no vials, no diluents, no separate syringes and no mixing instructions, because no mixing is needed. The active ingredient is already at the correct concentration inside the pen.

The pen mechanism is worth understanding before your first injection. Each Wegovy pen is a single-use device: once the dose is delivered and the pen is removed from your skin, the needle retracts and locks automatically. You cannot re-use it, and you cannot adjust the dose mid-pen. That built-in safety design is part of what distinguishes a licensed, manufacturer-produced pen from the compounded or counterfeit products the MHRA has repeatedly warned about. If you want to understand the difference a test can make when something about your pen looks wrong, see what a semaglutide test kit checks for.

The leaflet inside the box is worth reading before your first injection, not after. It covers injection sites (abdomen, thigh, upper arm), rotation, and the exact room-temperature storage window, detail the NHS summary of how to take semaglutide also covers in plain language.

Step 3, a one-minute check every patient should do at the point of delivery

The moment your pen arrives, build a simple habit: hold it up to a window or a lamp and look at the liquid inside. It should be clear and colourless. Any cloudiness, particles, or discolouration means you should not use it, contact the pharmacy before injecting. This takes under a minute and is specifically recommended in the PIL.

Also check the expiry date printed on the pen and the outer box before it goes in the fridge. Then confirm the pen hasn't been stored outside the cold chain for longer than the leaflet allows. If anything looks off, get in touch with the support team rather than guessing. Cold-chain failures during shipping are rare with a regulated courier service, but they do happen with some sellers who lack proper cold-chain infrastructure. Delivery method matters more than many patients realise.

For ongoing treatment, the process of checking your next prescription is also worth understanding. Every repeat at nume is clinically re-reviewed before dispatch, a point worth knowing if you're considering a move from another provider. The 1 mg semaglutide page and the 2 mg dose page explain what clinical review at those specific stages tends to focus on.

What 'semaglutide kits' from unregulated sellers actually are, and why it's a different thing entirely

The MHRA has issued repeated warnings about semaglutide products sold online that are not licensed UK medicines. Some are described as "research chemicals" or "peptide kits" and come as a powder with a separate water vial for mixing. These products are not licensed for human use, have no verified manufacturing standard, and have caused harm. They are also frequently mislabelled, meaning the dose you think you're injecting may be nothing like what's actually in the vial.

Legitimate UK supply of semaglutide for weight management means Wegovy, dispensed by a GPhC-registered pharmacy against a valid UK prescription. Full stop. The cost context for Wegovy in the UK is a useful read if price is a factor in your thinking, because the cheapest-looking listing is almost never the cheapest in any meaningful sense when counterfeit risk is factored in. If you want to verify any online pharmacy before using them, the GPhC pharmacy register is the place to check, our registration number is 9012878.

If you're ready to talk through clinical suitability for Wegovy, or just want to understand whether the licensed treatment fits your situation, the free consultation is the right next step. There's no obligation, and the clinical review happens the same day.