Mounjaro vs Wegovy: a thorough, balanced comparison for the UK

Compare the same things

Mounjaro acts on GIP and GLP-1 receptors; Wegovy acts on GLP-1 receptors. The established injectable treatments use a weekly routine, and Wegovy also has a UK-authorised daily tablet. A comparison should name the formulation, the population studied and the treatment period before drawing conclusions.

Two percentages from separate headlines can be misleading if the studies used different participants, support programmes or ways of analysing results. Even a direct comparison provides an average result for a study group. It cannot promise which medicine will work better for you, whether you will tolerate it, or how easy ongoing treatment will be to access.

Bring four questions to the consultation

Ask which option fits your medical history, what benefit you might reasonably aim for, which risks need particular attention and what follow-up will be available. Explain any previous side effects, diabetes treatment, eye problems or pregnancy plans. Practical concerns such as travel, swallowing tablets or using a pen also belong in the discussion.

Ask the clinician to explain the reason for their recommendation in everyday language. You should leave knowing what will be reviewed and when. If the answer is to wait, choose another approach or avoid these medicines, ask what support comes next. A useful consultation can lead to several reasonable outcomes.

Separate treatment choice from shopping comparisons

Once a clinician has agreed an appropriate treatment, comparing like-for-like costs can help with planning. Include repeat prescription charges, consultation costs, delivery and the end of introductory offers. The cheapest listed provider is a factual price result within a comparison, not a clinical endorsement or a promise of better outcomes.

If you already take one medicine, explain why you are considering a change: symptoms, cost, supply or disappointing progress. Switching needs a clinician's plan using your current treatment history. Do not overlap products, guess equivalent strengths or restart an old prescription. Ask how records will pass between providers and who is responsible during the transition.