Mounjaro Price Increase in the UK from September 2025: What Patients Need to Know

If you're taking Mounjaro® (tirzepatide) for weight loss, it’s important to be aware of an upcoming UK-wide price increase set for 1st September 2025.

As part of a broader realignment across global markets, Eli Lilly & Company will be increasing the UK list price of all Mounjaro doses to better reflect the treatment’s value and ensure consistency with other developed countries.

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Why Are Mounjaro Prices Increasing?

When Mounjaro launched in the UK, Lilly intentionally introduced it at a lower-than-average price, helping patients gain early access during a period of high demand and limited supply of GLP-1 receptor agonists.

Now, with:

• Improved global supply
• Stronger clinical evidence supporting its effectiveness
• Ongoing international demand

…the manufacturer is adjusting prices upward to match pricing in Europe and other comparable markets.

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How Much Will Prices Rise?

The scale of the increase will depend on your Mounjaro dose:

• Lower doses will see moderate price increases
• Higher doses (such as 10mg, 12.5mg, and 15mg) may rise by over 170%

💡 Tip: If you're using a higher dose for weight loss, it’s especially important to review your treatment plan now to avoid unexpected costs.

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What Does This Mean for Private and NHS Patients?

NHS Prescriptions

If you're receiving Mounjaro through the NHS (under type 2 diabetes management protocols), you should not be affected. Eli Lilly has confirmed a pricing agreement aligned with NICE and SMC cost-effectiveness standards. This helps ensure continued access within the NHS.

Private Prescriptions

For private patients (including those using Mounjaro for weight loss or via online clinics), the increase will likely be more noticeable. While Lilly has shared commercial terms with private providers to soften the impact, the final cost will depend on the clinic or pharmacy you use.

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What You Can Do Now

Here are some practical steps to prepare:

✅ 1. Check Your Current Prescription

Speak to your provider about how much you currently pay, and what the new price might be after September.

✅ 2. Consider Repeat Prescriptions

If you're due a refill before September, some providers may allow you to secure your next dose at the current lower price.

✅ 3. Explore NHS Options

If you meet NHS eligibility criteria for Mounjaro (e.g. for type 2 diabetes), ask your GP or specialist if you could transition to NHS care.

✅ 4. Review Your Treatment Plan

Your prescriber may be able to adjust your dose, discuss alternatives, or help you create a long-term access plan.

✅ 5. Budget and Prepare

If you're paying out-of-pocket, prepare for the higher cost now to avoid surprises in the months ahead.

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Final Thoughts

Mounjaro has helped thousands of people across the UK safely lose weight and manage their diabetes. While price changes can feel frustrating, they reflect the medication’s growing international demand and value.

At GLPCompare, we’re here to help you stay informed and supported through every change. If you're concerned about affordability, continuity, or alternatives, speak to your prescriber or pharmacist early — and use our platform to compare trusted providers.