Eli Lilly Stock Performance and Tirzepatide Mounjaro: What UK Patients Should Know (October 2026)

01 · The honest answer

Eli Lilly stock performance: what it means for UK patients

What is not in dispute is the commercial context. Tirzepatide, sold as Mounjaro, is a once-weekly injection made by Eli Lilly and licensed in the UK for weight management and type 2 diabetes.¹ Strong demand for a medicine is a business story. Whether it suits you is a clinical one.

For share-price questions, use Lilly's own quarterly results and a regulated financial adviser. For Mounjaro questions, our page on Eli Lilly and Company and Mounjaro covers who makes it and how it reaches the UK.

02 · Reading the headlines

Common stock questions, and what they mean for you

03 · Price planning

What Mounjaro costs while Lilly's sales grow

The standard price of one 4-week pen is £169.99 at 2.5mg, £218.99 at 5mg, £279.99 at 7.5mg, £290.99 at 10mg, £319.99 at 12.5mg and £329.99 at 15mg. A new customer saves £40 on their first order at any dose with code FIRST40. Every later order is £25 off the standard price (code DOSE25).

If you step up after 4 weeks on each dose, your first four pens (2.5mg to 10mg) cost £959.96 at standard prices; a new customer's first order is £40 less and every later order £25 less. A first year (13 pens) costs £2,711.88 if you stay on 5mg after your 2.5mg starting pen, up to £3,599.88 if you step up through every dose to 15mg, again at standard prices.

Across the UK pharmacies we track, the cheapest and dearest Mounjaro pens are £143.96 and £339.00 (checked 10 October 2026), and the gap between providers for the same dose ranges from £27 to £41. See our Eli Lilly Mounjaro price guide for the live comparison.

04 · Why tirzepatide demand is high

Why demand for tirzepatide is so high

Demand follows the evidence. Tirzepatide activates two gut-hormone receptors at once, GIP and GLP-1, which helps regulate appetite and slows how quickly the stomach empties.¹ Most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet.

In the SURMOUNT-1 trial of 2,539 adults, people taking tirzepatide alongside diet and exercise lost on average 15% of their body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, compared with 3.1% with lifestyle changes alone.² These are trial averages and individual results vary. For someone starting at 100 kg, 20.9% is about 21 kg.

Treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them. Our Mounjaro before and after one month guide explains what the early weeks are like.

05 · Oral tirzepatide and Foundayo

Oral tirzepatide: is there a Mounjaro pill?

There is no tablet form of Mounjaro; tirzepatide is injection-only in the UK.¹ Foundayo (orforglipron), a different medicine made by Eli Lilly, was approved in the UK in August 2026.

Foundayo is a once-daily GLP-1 tablet. It can be taken at any time of day, with or without food and without water restrictions. Treatment starts at 0.8mg once daily and steps up with at least 30 days at each dose, to a maximum of 17.2mg.²¹

In the ATTAIN-1 trial of 3,127 adults without type 2 diabetes, people taking the highest dose of orforglipron for 72 weeks lost on average 12.4% of their body weight, compared with 0.9% on placebo. The two lower doses gave 7.8% and 9.3%. In the trial, 10.3% of people on the highest dose stopped because of side effects, compared with 2.7% on placebo.²³

06 · Tablets versus injection

Tablets versus the Mounjaro injection

No trial has compared Mounjaro directly with either licensed tablet, so results from separate trials should not be set against each other. SURMOUNT-5 is the trial that compared tirzepatide directly with injected semaglutide.¹⁵

The practical differences matter as much as the averages. Wegovy tablets (oral semaglutide) need a strict empty-stomach routine every morning: take the tablet after fasting for at least 8 hours, swallowed whole with a sip of water (up to half a glass, about 120ml), then wait at least 30 minutes before eating, drinking or taking other tablets.²⁰ In the OASIS 4 trial, adults on the 25mg tablet for 64 weeks lost on average 13.6% of their body weight, compared with 2.2% on placebo.²²

Foundayo has no food or water rules, and Mounjaro needs one injection a week.²¹ A prescriber will check which option suits your health, your other medicines and your routine. Our weight loss treatments overview lists the options we supply.

07 · UK price rise and supply

The UK list-price rise and who supplies Mounjaro

Eli Lilly announced a UK list-price increase for Mounjaro on 14 August 2025, effective 1 September 2025. List prices rose from £92–£122 per month to £133–£330 per month depending on dose, an increase of up to 170% on the highest dose.¹⁰ Pharmacy sell prices vary because of confidential discounts.

Lilly is the manufacturer, and our does Eli Lilly make Mounjaro and is Eli Lilly the only manufacturer of Mounjaro pages explain this in detail. We supply Mounjaro through official LillyDirect supply, direct from Eli Lilly's UK distribution, as genuine KwikPens. Because demand is high, counterfeit and unregulated sellers exist. Anyone offering to supply without a consultation or prescription is a warning sign. Report suspected counterfeits and side effects through the MHRA Yellow Card scheme.⁷ You can check our registration (GPhC 9012878) on the public register, and see our genuine Mounjaro guide.

08 · NHS or private access

NHS or private: how to get Mounjaro

Mounjaro is available on the NHS, but access is being phased in over several years. NICE recommends it for adults with a BMI of at least 35 plus at least one weight-related condition. The NHS primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁴ Full rollout is expected to take years, which is why many people who meet the licensed criteria choose regulated private treatment.

Privately, Mounjaro is licensed for adults with a BMI of 30 or above, or between 27 and 30 with at least one weight-related condition such as high blood pressure, high cholesterol, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes.¹ A prescriber assesses your BMI, medical history and current medicines first.

09 · How ordering works

How ordering works with us

Ordering takes four steps, and our free consultation is the first.

• Free online consultation: a short health questionnaire, no charge and no obligation.
• Prescriber review: reviewed by a GPhC-registered prescriber, not a scoring script. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.
• Dispensing and dispatch: dispensed by our registered pharmacy, with same-day dispatch when ordered by 3pm.
• Delivery: free next-day tracked delivery in temperature-controlled packaging. Saturday delivery is £14.99.

Monthly reviews are included, and repeat orders re-check suitability with no auto-shipping. Klarna and pay-monthly options are available, with no subscription. Mounjaro is a prescription-only medicine, supplied only after a consultation reviewed by a GPhC-registered prescriber. Individual results vary, and this page is information, not medical advice.