Mounjaro Price Increases: What You Should Know

On 14th August 2025, Eli Lilly announced that the price of Mounjaro (tirzepatide) would rise by 1st September 2025. For many patients and private pharmacies, the news came as a shock, especially with reports of a 170% increase. Understandably, this has left both suppliers and patients anxious about what it means for their treatment going forward.

At Pharmacy Planet, we know how important it is to feel informed when changes like this happen. Our role is to guide you through the situation, explain what it means in real terms, and outline what your options are.

Why Are Mounjaro Prices Rising?

Mounjaro has quickly become one of the most sought-after weight management injections in the UK. But this rise in price isn’t due to shortages or sudden demand — it’s a decision by Eli Lilly to bring the UK price in line with other European markets.

This isn’t happening in isolation. Around the world, the cost of medicines has become a political talking point. In the United States, former President Donald Trump openly criticised companies like Eli Lilly for charging high prices, even suggesting a “most favoured nation” policy to cap drug costs. Although Eli Lilly disagreed with this approach, the debate shone a spotlight on how differently medicines are priced depending on where you live. The UK’s September price change fits into that much bigger picture — though for patients here, the impact will feel very personal.

Does the Price Rise Affect All Doses?

Yes — every strength of Mounjaro will be affected.

• NHS patients won’t notice a change as they get this for a standard base charge through a prescription. This may also be more difficult to acquire through the NHS as a patient onboarded elsewhere, as you may no longer fit the criteria for a public service like the NHS to enrol you. (Obesity - Treatment - NHS)
• For private patients using online or high-street pharmacies, the increase will be unavoidable.

What If I Can’t Afford Mounjaro Anymore?

If you’re worried that the new prices will put Mounjaro out of reach, you’re not alone. The good news is that there are alternatives that can offer similar benefits.

One of the main options is Wegovy (semaglutide). In clinical trials, patients lost up to 15% of their body weight in just over a year, and it has also been shown to reduce the risk of certain heart-related problems. At the moment, it tends to be the more cost-effective option compared with Mounjaro.

It’s important to know that switching medications isn’t as simple as stopping one and starting another. Prescribers usually recommend a short four-week break between GLP-1 medicines to make sure it’s safe. If this is something you’re considering, the best step is to book a consultation so a clinician can tailor advice to you.

Do I Need to Start Again If I Switch?

Not always. It depends on a few things:

• How far along you are with Mounjaro treatment
• Whether you’ve had any side effects
• What stage of dosing you’re at

For many people, switching doesn’t mean going back to square one. But it should always be discussed with a prescriber first, so your plan is safe and appropriate.

How Can I Be Sure I’m Getting Genuine Mounjaro?

Price rises sometimes tempt people to look for cheaper deals online, but this is risky. Sadly, counterfeit medicines do exist. To protect yourself, make sure the pharmacy you use is:

• Registered with the GPhC
• Open about who their prescribers are (with registration numbers clearly listed)
• Reviewed independently on trusted platforms like Trustpilot

Pharmacy Planet will always provide UK-sourced, MHRA-approved medicines with a safe consultation process, so you can feel confident that what you’re getting is genuine.

Final Thoughts

The price rise of Mounjaro will undoubtedly cause stress for many patients, but it doesn’t mean your treatment journey has to stop. There are still safe and effective options available — and you don’t need to figure it all out on your own.

At Pharmacy Planet, our clinical team is here to listen, guide, and support you. Whether you want to stay on Mounjaro or explore alternatives, we’ll help you make the choice that’s right for you.

As of 18th August 2025, Pharmacy Planet have not confirmed new pricing. We are looking to keep our prices as low as we can for as long as we can to ensure that all patients have access to treatment, which has now been limited to 1 pen per person, per month. 

If you’re concerned about your treatment on Mounjaro, start a consultation today to speak with a member of our clinical team.