Can I go on Mounjaro? Here's the honest answer

Step 1: Check whether you meet the licensed criteria

The starting point is your BMI. The UK licence for Mounjaro covers adults with a BMI of 30 or above, or 27 or above when at least one weight-related condition is present. Conditions that count include type 2 diabetes, prediabetes, hypertension, high cholesterol, obstructive sleep apnoea and certain others. For people from South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, UK guidance applies thresholds that are 2.5 kg/m² lower, so the numbers shift accordingly.

That's the licence. It sets a floor, not an approval. A prescriber still needs to be satisfied that Mounjaro is appropriate for you specifically. Some people who technically meet the BMI threshold have medical histories (a personal or family history of medullary thyroid carcinoma, certain gastrointestinal conditions, or a history of pancreatitis) that would prompt more caution or rule treatment out entirely. The full overview of Mounjaro covers what those conversations with a clinician typically involve.

The NHS BMI calculator at nhs.uk gives you a quick reference figure if you're not sure where you stand before filling in a consultation form.

Step 2: Complete a clinical consultation, and have it reviewed by a real prescriber

Once you decide to go ahead, the consultation is the core of the process. At nume, that means answering a structured set of health questions covering your BMI, weight history, any existing diagnoses, medicines you're currently taking and your goals. Your identity is confirmed with photo ID, and your weight is verified on a live video call, not self-reported and taken on trust.

A GPhC-registered Independent Prescriber then reads through your responses the same day. A real clinician reviews your answers, not a piece of software working through a ruleset. If everything is clinically appropriate, a prescription is issued and your treatment is dispatched. Our clinical team oversees this at every stage.

One practical detail: if you order before 12 pm on a weekday, approved treatment leaves the same day and arrives with DPD the next working day, in plain unbranded packaging. The pen itself is compact and pre-filled, each KwikPen holds four weekly doses.

Step 3: Understand what you're committing to

Going on Mounjaro is not a single transaction. It is an ongoing clinical relationship. Treatment begins at 2.5 mg (a starting dose designed to help your system settle before any titration) and moves forward under prescriber guidance, typically in four-week steps. Your prescriber leads that; you don't self-adjust.

Before each repeat supply, a clinical review takes place. That is standard practice and a patient-safety requirement, not an inconvenience. If you're considering how long a course actually runs, the pages on short-term use and three-month courses set out what the evidence says about duration. Cost context is covered plainly on the Mounjaro prices page.

Side effects are mostly gastrointestinal (nausea, loose stools, constipation, indigestion) and tend to peak after a dose change before settling. Severe, persistent stomach pain that radiates to the back warrants urgent medical attention, as the MHRA has highlighted in its guidance on GLP-1 medicines. You can report any suspected side effects through the MHRA's Yellow Card scheme. Women taking oral contraceptives should know that absorption of the pill may be reduced during the first four weeks of Mounjaro and for four weeks after each dose increase; a non-oral contraceptive method is advisable during those windows.

Step 4: Know that uncertainty is part of a good consultation

If you're still weighing things up (whether Mounjaro is right for you at all is a genuine question worth sitting with) that's what the consultation process is designed to accommodate. A prescriber is not there to rubber-stamp a request; they're there to help you reach a considered decision. Questions our prescribers hear regularly: what happens if I stop, can I restart after a break (covered on the returning to Mounjaro page), and what does treatment actually feel like day to day.

If you'd like to explore what weight-loss treatment options look like more broadly before committing, that's a sensible starting point too. When you're ready to find out whether you personally can go on Mounjaro, the next step is a free clinical consultation with our prescribers at the treatments page. No obligation, no hidden fees, just a proper clinical assessment.