The best place to buy weight loss injections in the UK

You are looking at a screen full of options, here is how to tell which ones are actually legal

Picture it: you have read enough to know Mounjaro or Wegovy could be appropriate for you, and now you are looking at a dozen websites, a few social media accounts and a couple of price-comparison pages. Some promise next-day delivery without a form to fill in. Some quote prices that seem surprisingly low. Some have logos that look official but link to nothing verifiable.

The starting point for cutting through all of that is straightforward. Both Mounjaro (tirzepatide) and Wegovy (semaglutide) are classified as Prescription-Only Medicines under UK law. A prescriber who has assessed your health must authorise supply, full stop. Any source offering these medicines without that step is operating outside UK law, and the MHRA has warned repeatedly that fake pens sold this way have caused serious harm, including hospitalisations from counterfeits containing insulin rather than the labelled medicine.

The check that takes about sixty seconds: every legitimate online pharmacy in the UK must be registered with the General Pharmaceutical Council. You can search by name or registration number at the GPhC pharmacy register. If a seller is not listed there, walk away regardless of how professional the website looks. For reference, nume's GPhC premises registration is 9012878, you can verify it directly using that number. Reporting a suspected illegal seller takes one minute via the MHRA's Yellow Card scheme, and that report genuinely helps protect the next person who searches.

Red flags worth memorising: supply offered without a clinical assessment, prices dramatically below the published market range, discount codes tied to a specific medicine, and sellers who cannot point you to a verifiable GPhC registration. If you are unsure where to start your search, our guide on where the best place to buy weight loss injections actually is walks through exactly what to look for before you hand over payment details.

The clinical route, step by step, what happens between searching and receiving

The legal route to weight loss injections in the UK runs through a prescriber. That prescriber must assess whether the medicine is clinically appropriate for you specifically, not just for people with your BMI in a spreadsheet. At nume, the sequence is practical and designed not to waste your time.

You complete a free health consultation online. That consultation covers your medical history, current medicines, weight, and any conditions that affect suitability. It then goes to one of our prescribers, a named, GPhC-registered Independent Prescriber who reviews it personally. If you are suitable, a prescription is issued and your treatment is dispensed from our own registered pharmacy.

Before any prescription is confirmed, identity is verified with photo ID and your weight is checked on a live video call. Patients transferring from another provider are asked for evidence of their current dose. This is not bureaucracy for its own sake; it is the safety architecture that makes clinical review meaningful. If you are wondering about timing: orders placed before 12pm Monday to Friday go out the same day and arrive the next working day via DPD tracked delivery, so if payday lands on a Thursday and you order that morning, your treatment can be with you on Friday.

Every repeat order at nume goes through clinical re-review before it is dispensed. Nothing is sent automatically. That structure is deliberate, because these are medicines that need ongoing clinical oversight, not a subscription service that runs on direct debit. If you want to understand how to buy weight loss injections online through a process that includes proper clinical oversight at every step, our overview explains how the process differs from typical online models on our treatment overview page.

Who is eligible, and what the assessment actually looks at

Eligibility for weight loss injections is determined by the prescriber, not by a tick-box on a website. The licensed criteria give the frame: adults with a BMI of 30 or above, or a BMI of 27 or above alongside at least one weight-related condition such as high blood pressure, high cholesterol, type 2 diabetes or prediabetes, obstructive sleep apnoea, or similar. Lower BMI thresholds can apply for some ethnic backgrounds under UK guidance. A BMI figure alone does not guarantee a prescription, the full clinical picture matters, including current medicines, personal and family medical history, and any conditions that would make treatment unsuitable.

The NICE appraisal of tirzepatide (TA1026) sets out the evidence base and clinical criteria in detail if you want the full regulatory picture. For a practical sense of how NHS eligibility compares with private routes, the NHS weight loss injections page covers the phased rollout and waiting-list reality. People who do not meet the current NHS criteria, or who prefer not to wait, often explore private prescription through a registered pharmacy like nume instead, and our guidance on choosing the best company to buy weight loss injections from can help you compare your options with confidence.

It is also worth knowing what these medicines are not suitable for: pregnancy, breastfeeding, actively trying to conceive, and anyone under eighteen. Certain conditions (including a personal or family history of medullary thyroid carcinoma) require specific prescriber discussion. The side effects overview covers the safety profile if that is your next question. When you are ready to take the next step, our page on how to buy weight loss injections through a registered UK pharmacy sets out exactly what to expect, and speaking to our prescribers once you have read through the basics will put you in a much stronger position to have a useful clinical conversation.