5 mg Mounjaro Cost: What UK Private Pricing Actually Looks Like

Step 1: Understand what you're actually comparing

Private Mounjaro pricing in the UK changed significantly from 1 September 2025, when Eli Lilly increased its UK list prices across all strengths. Reported market prices since then range roughly £149 to £375 per four-week pen depending on dose and provider, though the 5 mg cost sits closer to the middle of that range. Treat any figure you read (including here) as indicative rather than fixed; providers adjust their fees and that range will shift.

The key question is not which number looks smallest. It's what that number includes. A headline Mounjaro 5 mg cost quoted by one provider may cover the pen alone. Another may fold in the consultation, the prescription charge, delivery, and clinical support afterwards. Those are meaningfully different offerings at what can look like the same price on a comparison site.

For context on how the 5 mg dose sits within the full tirzepatide schedule, our Mounjaro overview explains the licensed UK strengths and how titration typically works under prescriber guidance.

Step 2: Check what the headline price leaves out

Consultation fees are the most common omission. Some providers charge these separately, a flat fee per assessment, or a recurring charge each time you need a dose review. Prescription charges can also appear as a line item. Delivery costs vary: next-day tracked services cost providers real money, and not every price includes them.

Aftercare is the quieter gap. When nausea is rough in week two of 5 mg, or you have a question before your next dose, access to a clinical team matters. Some providers offer it; many don't include it in the base price.

None of this is to say the cheaper option is wrong, only that the comparison is harder than a single £ figure suggests. Mounjaro pricing factors breaks this down if you want to work through what any quote actually covers before you commit.

Step 3: Where nume sits on price, and why

We are not the cheapest provider of 5 mg Mounjaro. That's a deliberate choice, not an oversight. One transparent fee covers the consultation, the prescription, the medicine, and free next-working-day DPD delivery, tracked to your door in plain, unmarked packaging, with no indication of the contents. Clinical aftercare is included seven days a week. There are no subscriptions and no auto-renewals; every repeat order is assessed individually by a prescriber before anything is dispatched.

Our prescribers are GPhC-registered Independent Prescribers. Our clinical team signs off every prescription personally. That's the thing a lower headline price typically trades away first.

Current treatment pricing is listed on our weight-loss treatments page, we don't publish per-pen prices in our editorial content because they move, and we'd rather you see the live figure than a stale one.

Step 4: Why price is the wrong primary measure for a prescription medicine

The MHRA has warned publicly about counterfeit GLP-1 pens sold online (including fake tirzepatide pens) and in October 2025 raided the first illicit UK manufacturing site producing counterfeit Mounjaro in Northampton. Fake pens have contained insulin rather than tirzepatide, with serious consequences for patients. The MHRA Yellow Card scheme lets you report suspect sellers and suspected side effects.

The safer framing when you're assessing cost is not cheapest versus dearest, but legitimate versus not. Verify any online pharmacy on the GPhC register before you hand over payment or medical information. A prescription-only medicine supplied without clinical assessment is a warning sign, not a bargain. If you're starting treatment and want to understand what the introductory dose involves, our page on what the 2.5 mg starting pen costs gives a clear picture of that first tier, and as you approach the upper end of the schedule, our page covering what the 15 mg maintenance pen costs sets out the figures for that final strength. If you're already titrating and want to know what to expect at the next step up, our guide to the 7.5 mg Mounjaro cost covers what that mid-treatment dose typically runs.

If you're weighing Mounjaro against other injectable options, how Saxenda and Mounjaro compare on cost covers the evidence and the pricing landscape side by side.