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Guides
Short, sourced guides to weight loss medicines and the providers who supply them in the UK. Each one answers a question, points you at the official register and the tool that does the job, and cites where the facts come from. Factual reference, not medical advice.
Check a provider
Make sure who you are buying from is on the register.
How to check a weight loss provider is legit
The three registers, how to read a registration, and the red flags before you buy.
How to spot an illegal weight loss jab seller
What an illegal seller looks like, why “research use only” is not a defence, and how to report one.
Who actually dispenses your prescription?
Many brands are a shop front. How to find the registered pharmacy behind one and check it.
Why a proper clinic checks your BMI and ID
Since 2025 a prescriber must verify your weight and BMI independently. Why that is a good sign.
What “research use only” really means
Why the label is not a legal shield or a safety mark, and what the MHRA actually does about it.
Cost and access
What it costs, the NHS route, and keeping treatment going.
How much do Mounjaro and Wegovy cost in the UK?
What you pay on the NHS and privately, and why private prices vary between pharmacies and doses.
Can you get Mounjaro or Wegovy on the NHS?
Who qualifies in each UK nation, why access is phased, and what to do if you do not yet.
If your pharmacy runs out, or the price jumps
Check for a national shortage, move to another registered provider, and keep treatment going safely.
Weight loss pills in the UK: what is approved
The oral Wegovy tablet and orforglipron are now MHRA-approved. What that means, and what it does not.
Why the Mounjaro price went up in the UK
Lilly raised the UK list price from September 2025. Why private prices rose and the NHS charge did not.
Your pen
Storing it, travelling with it, and fixing it when it will not work.
How to store Mounjaro and Wegovy pens
Fridge temperature, how many days a pen lasts once in use, and why you must never freeze it.
Travelling with a weight loss pen
Keeping it cold without freezing it, flying with needles, and what to do when you arrive.
Pen not working? Mounjaro and Wegovy troubleshooting
The fixes from the UK leaflets for a pen that will not turn, click, or reach zero, and when to start a new pen.
Side effects and your treatment
What to expect, switching, and the signs to act on.
Mounjaro and Wegovy side effects: what to expect
The common stomach effects, when they ease, and the serious signs to act on, from the UK leaflets.
Switching between Mounjaro and Wegovy
Why there is no dose-for-dose swap, the reasons people switch, and why it is a prescriber's decision.
What to expect in your first month on Mounjaro or Wegovy
Why you start low, when it begins to work, the step-up side effects, and the practical bits.
Looking for the dose maths, a schedule or a price check instead? See the tools.