UK medicines explained

Clear UK guides to Mounjaro, Wegovy and other GLP-1 medicines.

Independent information and advice, with no sponsorship. Understand the evidence, compare the practical differences and find answers to everyday questions. Written in plain British English, with links to the sources.

General information for UK adults. These medicines require a prescription and an individual clinical assessment.
Editorial update

Buying privately? Start here

Explore price comparisons for Mounjaro, Wegovy injections, Wegovy tablets and Foundayo, then check the pharmacy and the terms of the offer before ordering.

Buying safely

  1. Match the pharmacy details. Find the dispensing pharmacy on the GPhC register for Great Britain or the PSNI register for Northern Ireland and compare its name and address with the seller’s details.
  2. Ask who prescribes and who follows up. Expect a clinical assessment before a prescription is issued. Find out whom to contact about side effects, delays or a damaged order.
  3. Compare the total cost. Check whether consultation, delivery and follow-up are included, and what the next order will cost after any introductory offer.

Concerned about a website or social media seller? See how to check or report a suspicious seller.

Understand the medicines

How the products differ, what the evidence shows, and what to discuss with a clinician.

Use the tools with confidence

Labelled pen doses, transparent cost estimates, and a protein calculator with clear limits.

Manage the practical questions

Eating, drinking, travel, storage and support during or after treatment.

Practical guide

Eating well on Mounjaro

A practical UK food plan for a smaller appetite on Mounjaro, with balanced meals, protein, symptoms and personalised support.

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Practical guide

Eating well on Wegovy

Plan manageable meals on Wegovy and understand how tablet food timing differs from weekly injections, with support for nutrition and symptoms.

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Practical guide

Staying hydrated on Mounjaro

Build a practical drinking routine on Mounjaro, recognise dehydration and know when symptoms need urgent help or a prescribing review.

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Practical guide

Staying hydrated on Wegovy

Practical hydration guidance for Wegovy tablets and injections, including the tablet water instruction, fluid restrictions and symptoms needing help.

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Practical guide

Travel insurance when taking Mounjaro

Prepare an accurate Mounjaro travel insurance enquiry, check medical and medicine cover, and plan UK KwikPen transport without assuming universal acceptance.

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Practical guide

Travel insurance when taking Wegovy

Questions to ask your insurer about Wegovy, including tablets versus pens, treatment changes, cancellation, medicine loss and destination checks.

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Practical guide

Travelling with Wegovy tablets

A UK checklist for taking Wegovy tablets abroad: original blister packaging, daily food timing, documentation, time zones and lost medicine.

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Practical guide

Planning weight maintenance after Mounjaro

What tirzepatide withdrawal research shows and how to arrange support, food routines, activity and clinical follow-up before stopping Mounjaro.

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Practical guide

Planning weight maintenance after Wegovy

Understand semaglutide withdrawal evidence, its limits for newer presentations, and how to plan support and follow-up after Wegovy.

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Practical guide

Choosing apps while taking GLP-1 medicines

Compare official NHS food, walking and running apps, choose useful tracking for GLP-1 treatment reviews, and check privacy without relying on dose predictions.

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Check medicines and seek help

Know where to find official checks, product-specific instructions and advice about symptoms.

Know how the information is prepared

Check our sources, editorial process, contact route and the limits of the information before relying on a page.