MedExpress Mounjaro: UK Prices, Eligibility & How It Compares (2026)

MedExpress is one of the UK's most searched-for online pharmacies when it comes to Mounjaro (tirzepatide). Thousands of people every month look into ordering Mounjaro through MedExpress, but how much does it actually cost, who is eligible, and is it the right choice for you?

This guide breaks down everything you need to know about getting Mounjaro from MedExpress in 2026, including up-to-date pricing across every dose, how the service works, and how it compares with other UK providers.

What Is MedExpress?

MedExpress is an online pharmacy and telehealth service registered with the General Pharmaceutical Council (GPhC) in the UK. They offer a range of prescription treatments including weight loss medications, and have become particularly well known for supplying Mounjaro (tirzepatide) privately.

The service operates on a consultation model: you complete an online health assessment, a prescriber reviews your case, and, if clinically appropriate, your medication is dispensed and delivered to your door.

MedExpress Mounjaro Prices in 2026

Mounjaro pricing at MedExpress has changed several times, most recently following Eli Lilly's UK price increase. Here is a guide to the approximate cost per pen at each dose level. Note that prices can change frequently, so always check the MedExpress website for the latest figures.

Prices are approximate and may vary. Always verify the latest pricing directly with MedExpress before ordering.

Why Have MedExpress Mounjaro Prices Gone Up?

In late 2025 and into 2026, Eli Lilly (the manufacturer of Mounjaro) increased wholesale prices for tirzepatide in the UK. This affected every pharmacy and provider — not just MedExpress. You can read more about why this happened in our article on Eli Lilly's Mounjaro price increase.

Who Is Eligible for Mounjaro Through MedExpress?

To be prescribed Mounjaro through MedExpress (or any legitimate UK provider), you will generally need to meet these clinical criteria:

• BMI of 30 or above (clinically obese), or
• BMI of 27 or above with at least one weight-related health condition (such as type 2 diabetes, high blood pressure, high cholesterol, or sleep apnoea)
• Be aged 18 or over
• Not be pregnant, breastfeeding, or planning pregnancy
• Have no history of pancreatitis, medullary thyroid carcinoma, or MEN2 syndrome

A prescriber will review your full medical history before approving treatment. This is a legal requirement for all UK pharmacies dispensing prescription-only medicines.

For a detailed breakdown of NHS vs private eligibility, see our guide on NHS eligibility for weight loss injections.

How Does the MedExpress Mounjaro Service Work?

The typical process for getting Mounjaro from MedExpress involves:

1. Online consultation — You complete a health questionnaire covering your weight, medical history, current medications, and weight loss goals.
2. Prescriber review — A registered clinician assesses your answers and decides whether Mounjaro is clinically appropriate.
3. Prescription and dispensing — If approved, the pharmacy dispenses your Mounjaro pen.
4. Delivery — Your medication is delivered to your home, usually within a few working days.
5. Ongoing management — You reorder when you need your next dose, typically every four weeks.

Is MedExpress Mounjaro Legit?

Yes. MedExpress is a GPhC-registered pharmacy, which means it is regulated by the UK's pharmacy watchdog. The Mounjaro pens they dispense are genuine Eli Lilly products.

That said, it is always worth checking a few things before ordering from any online pharmacy:

• Look for the GPhC registration number on their website
• Check that the pharmacy appears on the GPhC register
• Confirm they require a proper medical consultation before prescribing
• Avoid any provider that sells Mounjaro without a prescription

For more on what to look for in a safe provider, read our guide to choosing the best Mounjaro provider in the UK.

MedExpress vs Other UK Mounjaro Providers

MedExpress is not the only option for getting Mounjaro privately in the UK. Here is how it compares with other well-known providers on key factors.

One important difference is the level of clinical support you receive. Some providers offer a prescription and little else, while others provide ongoing doctor consultations, dose adjustment guidance, and support throughout your weight loss journey. If you are taking a GLP-1 medication for the first time, having access to a specialist weight loss doctor can make a real difference to your results and safety.

What Mounjaro Doses Does MedExpress Offer?

MedExpress typically stocks the full range of Mounjaro KwikPen doses:

• 2.5 mg — the starting dose for all new patients (used for the first four weeks)
• 5 mg — the first therapeutic dose
• 7.5 mg, 10 mg, 12.5 mg, 15 mg — higher doses for continued titration

Mounjaro is a titratable medication, meaning your dose gradually increases over time. Most patients start at 2.5 mg and move up every four weeks under clinical guidance. Jumping straight to a higher dose is not recommended and a reputable provider will not allow it.

For more on how Mounjaro dosing works, see our article on whether Mounjaro is safe.

Common Side Effects of Mounjaro

Whether you get Mounjaro from MedExpress or another provider, the medication itself is the same. The most commonly reported side effects include:

• Nausea (especially in the first few weeks or after a dose increase)
• Diarrhoea or constipation
• Reduced appetite (this is part of how the medication works)
• Injection site reactions
• Fatigue or tiredness
• Acid reflux or indigestion

Most side effects are mild and tend to improve as your body adjusts. Eating smaller meals, staying well hydrated, and following a Mounjaro-friendly diet can help manage them.

If you experience severe or persistent symptoms, contact your prescriber or GP.

Can You Get Mounjaro on the NHS Instead?

Mounjaro (tirzepatide) is available on the NHS for weight management, but access is currently limited. NHS prescribing is typically restricted to specialist weight management services, and waiting lists can be long.

To qualify on the NHS, you generally need a BMI of 35+ (or 30+ with weight-related comorbidities), and you will usually need to have tried other weight management approaches first.

Many people turn to private providers like MedExpress or heySlim because the NHS pathway can involve months of waiting. Our NHS eligibility guide covers the full criteria and what to expect.

Tips for Getting the Best Value on Mounjaro

Mounjaro is not cheap, regardless of which provider you use. Here are some practical ways to manage costs:

• Compare providers before committing — prices vary significantly across UK pharmacies. See our Asda Mounjaro pricing guide and best Mounjaro provider comparison
• Ask about subscription or bundle pricing — some providers offer lower per-pen costs if you commit to a treatment plan
• Factor in the full cost of care — a slightly higher per-pen price may be worth it if the provider includes doctor consultations, dose titration support, and ongoing monitoring
• Check for NHS eligibility — you may qualify for free treatment through specialist services

Switching from MedExpress to Another Provider

If you are currently using MedExpress for Mounjaro and considering switching, the process is usually straightforward. Most providers will ask for your current dose and treatment history as part of their consultation.

You do not need a referral or transfer letter to move between private providers. Simply start a new consultation with your chosen provider and share your medication history honestly.

If you are considering switching between medications (for example, from Mounjaro to Wegovy), see our guide on switching from Mounjaro to Wegovy.

Summary

MedExpress is a legitimate, GPhC-registered option for getting Mounjaro in the UK. Their prices are broadly in line with other private providers, though costs have risen in 2026 due to manufacturer price increases.

When choosing a provider, price is important, but it should not be the only factor. The level of clinical support, the qualifications of the prescribing team, and the quality of ongoing care all matter, especially with a medication like Mounjaro that requires careful dose titration and monitoring.

If you would like to explore Mounjaro with support from specialist weight loss doctors, start your consultation with heySlim today.

This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any new medication.