GLP-1 Solution: What It Means and How to Get Treated in the UK (October 2026)

01 · The short answer

What is a GLP-1 solution, and is it right for you?

A GLP-1 solution is a prescription medicine that copies or acts on the gut hormone GLP-1 to help control appetite. It is a medical treatment, not a quick fix. The phrase also gets used for liquids, oral products and lab tests, so it helps to be clear about which one you mean before you spend money or take anything.

The licensed route in the UK is an injection or tablet prescribed after a clinical review. Mounjaro is the brand name for tirzepatide, a once-weekly injectable prescription medicine made by Eli Lilly. In the UK it is licensed for weight management in adults and for type 2 diabetes.¹ It is used alongside a reduced-calorie diet and increased physical activity, and individual results vary.

If you have seen products labelled as a "GLP-1 solution" that promise dramatic weight-loss claims without a consultation or prescription, treat them with caution. Genuine GLP-1 medicines are prescription-only. Low-cost supplements sold under similar names have no clinical oversight and are not the same thing as the licensed medicines. Our guide to liquid GLP-1 products explains the difference in more detail.

02 · Your next decision

The decisions you are actually facing

Most readers face two practical decisions. The first is whether a GLP-1 medicine is relevant to you at all. The second is whether to wait for NHS access or use regulated private treatment. Neither decision needs to be rushed, and a prescriber can talk through both with you.

If you are ready to look at treatment, our Mounjaro pen prices and consultation page shows every strength, and the free online consultation is reviewed by a GPhC-registered prescriber. You can also compare the Wegovy pen. Your first 2.5mg pen costs £129.99 with code FIRST40 (standard price £169.99), and every later order is £25 off the standard price.

03 · What to do next

A sensible way to proceed

Start by reading how these medicines work, then check your own circumstances against the safety information. If you want to go further, complete a consultation. Our prescribers review every order, and unsuitable orders are refunded automatically. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.

If you are still comparing, our guide to whether these medicines work and our weight loss clinic page give the wider picture of the evidence and support available. You do not need to decide today. Taking time to understand a medicine you may use for months is the right instinct.

04 · How GLP-1 medicines work

How GLP-1 medicines work

GLP-1 medicines work by acting on natural gut-hormone receptors that help regulate appetite. GLP-1 is a hormone your gut releases after eating. Medicines in this class are designed to act on the same receptor, which is why they are described as GLP-1 receptor agonists.

Mounjaro takes this a step further. Tirzepatide is the first treatment of its kind to activate two natural gut-hormone receptors at once: GIP and GLP-1.¹ Together these help regulate appetite, slow how quickly the stomach empties, and improve the way the body responds to insulin. In practice, most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet.¹

That last point matters. The medicine does not burn fat on its own. It changes how hungry you feel and how quickly you feel full, which makes it easier to eat less. The diet and activity changes are still the part that produces weight loss, and the medicine is there to make them more achievable.

This dual action is what distinguishes Mounjaro from single-action GLP-1 medicines such as semaglutide (Wegovy/Ozempic).¹ That does not automatically make one a better choice for every person. Both are effective licensed treatments, and the right one depends on your health, your tolerance and your prescriber's judgement.

Why people talk about "food noise"

You may see the phrase "food noise" used to describe constant thoughts about food. It is a popular description rather than a clinical term. In practice, most people feel fuller sooner and less hungry between meals. Whether that feels like quieter thoughts about food varies from person to person.

How long it stays in the body

Tirzepatide has a half-life of about five days, so after a final dose it takes roughly 4–5 weeks to clear the system — there is no way to speed this up, and nothing needs doing while it clears.¹ This is useful to know if you are planning around surgery, pregnancy or stopping treatment. Speak to your prescriber before you make any of those plans, because they can advise on timing.

Why it is injected weekly

Once-weekly dosing follows from the medicine's long half-life. You take one injection on the same day each week using a pre-filled pen, rather than remembering a daily dose.

Because the effect builds with dose, treatment starts low and steps up gradually. This gives the body time to adjust and is a key part of how tolerability is managed.

05 · The licensed GLP-1 products

The licensed GLP-1 products available in the UK

Several GLP-1 based medicines are licensed in the UK, and they differ in how often you take them, how you take them and what they act on. Knowing which is which stops the name "GLP-1 solution" from blurring them together.

Mounjaro (tirzepatide)

Mounjaro is a once-weekly injectable prescription medicine made by Eli Lilly. In the UK it is licensed for weight management in adults and for type 2 diabetes. It comes as a pre-filled multi-dose pen (KwikPen) in six strengths: 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.¹ Treatment starts at 2.5mg and steps up under prescriber guidance. You can see strengths and current availability on our Mounjaro product page.

Wegovy (semaglutide)

Wegovy pens come in 0.25mg, 0.5mg, 1mg, 1.7mg and 2.4mg once-weekly strengths. Titration steps up after at least four weeks, reaching the 2.4mg maintenance dose from week 17.¹⁸ The 2.4mg dose is the licensed maintenance dose for weight management. Wegovy acts on GLP-1 alone, which is the main mechanical difference from Mounjaro. You can look at the Wegovy pen page for current details.

Liraglutide

Liraglutide (Saxenda, and products such as Erly) is supplied at a concentration of 6mg per millilitre. It is a daily injection, unlike once-weekly Mounjaro and Wegovy. For anything beyond that, such as expected results, your prescriber can advise, as figures vary.

Oral options

Wegovy tablets (oral semaglutide) and Foundayo (orforglipron) are tablet-form GLP-1 treatments with their own product information. No trial has compared Mounjaro directly with either tablet, so results from separate trials should not be set against each other as if they were head to head. Our guides to the oral GLP-1 route and the NHS position on oral options explain what is and is not available.

Choosing between them

The right option depends on your medical history, what you can tolerate, whether you prefer an injection or a tablet, and what your prescriber recommends. The first large trial that directly compares tirzepatide with semaglutide for obesity is SURMOUNT-5.¹⁵ Results from separate trials, with different people, durations and doses, should not be set against each other as if they were head to head. A prescriber can talk you through the differences for your situation.

One further point: medicines still in development or without a UK licence, such as retatrutide, are not available through a regulated UK pharmacy. If a website offers them, that is a warning sign.

06 · What results to expect

What results to expect from GLP-1 treatment

SURMOUNT-1 showed large average weight loss on Mounjaro alongside diet and exercise. These are trial averages, and individual results vary, so treat them as a guide to what is possible rather than a promise.

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 — individual results vary, and treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them.²

The trial also reported how many participants reached particular thresholds. At 72 weeks, 85% of participants on 5mg, 89% on 10mg and 91% on 15mg had lost at least 5% of their body weight. Half of participants on 10mg and 57% on 15mg lost at least 20% of their body weight.²

Putting the percentages in context

Percentages can feel abstract. For someone starting at 100 kg, 20.9% is about 21 kg. Your own result depends on your starting point, your dose, how well you tolerate treatment and how closely you follow the diet and activity advice.

If a seller promises a precise timescale, that tells you more about the seller than the medicine.

What "fastest" really means

People often ask how to lose weight the fastest on a GLP-1 medicine. The honest answer is that the dose schedule is set by your prescriber and is designed around tolerability, so rushing it is not safe or licensed. The dependable levers are the ones in the trial: taking the medicine as prescribed, eating a reduced-calorie diet and being more physically active.

Is it faster than Wegovy?

Only SURMOUNT-5, the direct head-to-head trial, supports a comparison of tirzepatide and semaglutide.¹⁵ In SURMOUNT-5, adults on tirzepatide lost on average 20.2% of body weight over 72 weeks versus 13.7% on semaglutide 2.4mg (Wegovy); both are effective, licensed treatments, and individual results vary.¹⁵ Your prescriber can talk through which medicine may suit you better.

07 · Who can and cannot take GLP-1

Who can and cannot take GLP-1 medicines

Suitability is decided by a prescriber, not by a headline rule. These medicines are for adults, are used alongside a reduced-calorie diet and more physical activity, and are supplied only after a consultation reviewed by a GPhC-registered prescriber.¹ Mounjaro is not suitable for everyone. You should not take it if you are allergic to tirzepatide or any of its ingredients, and it should not be used during pregnancy or while trying to conceive. Your prescriber will take extra care, or may recommend against treatment, if you have a history of pancreatitis, severe gut or digestive disease, diabetic retinopathy, or gallbladder problems. Mounjaro must not be used during pregnancy, and it should be stopped at least one month before trying to conceive. If you become pregnant during treatment, stop the medicine and tell your prescriber promptly.

What the patient information leaflet covers

The patient information leaflet is the document that comes in the box, and it is written for you rather than for clinicians. It covers what the medicine is, who should not use it, how to inject it, possible side effects, how to store it and what to do if something goes wrong.¹³ Read the whole leaflet before your first dose, and keep it. If anything in it is unclear, ask your prescriber or pharmacist.

Things to tell your prescriber

Be open about your full medical history, every medicine you take and any plans such as pregnancy. A good consultation is a conversation about risk, so withholding information only works against you. Our process is a free online consultation, then a review by a GPhC-registered prescriber, not a scoring script. Unsuitable orders are refunded automatically.

Contraception

Tirzepatide can reduce absorption of oral contraceptives because stomach emptying slows. The SmPC advises switching to a non-oral method, or adding a barrier method (such as condoms), for 4 weeks after starting Mounjaro and for 4 weeks after each dose increase.¹ The MHRA has published guidance on contraception with these medicines.⁷ If you use oral contraception, discuss this with your prescriber so you can agree a plan, rather than guessing.

Diabetes medicines

If you take insulin or sulfonylureas, doses may need adjusting because of the risk of low blood sugar. This does not mean the medicines can never be used together. It means your prescriber needs to know and may change the plan. Never adjust diabetes medicines on your own.

Unlicensed and unregulated sources

Anyone offering to supply a GLP-1 medicine without a consultation or prescription is not operating safely. Genuine prescription medicines should come from a pharmacy you can verify on the public register. Ours is registered with the GPhC under 9012878, and you can check it yourself.

If you take a new medicine and later feel unwell, tell your prescriber, and report suspected side effects through the Yellow Card scheme.¹⁹

08 · NHS and private access

NHS and private access to GLP-1 treatment

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, and the NHS primary-care rollout began in June 2025 with the highest-need groups first (initially BMI 40+ with four or more qualifying conditions).⁴⁶ Full rollout is expected to take years, which is why many people who meet the licensed criteria choose regulated private treatment rather than waiting.

Checking your position on the NHS

A sensible first step is to ask your GP what is happening locally. NHS guidance on the medicine explains what it is for and how it is used.⁵ NHS access to Wegovy runs through specialist weight-management services; ask your GP.

If you would like to read how the NHS is handling tablet-form options, our page on NHS GLP-1 oral options sets out what is currently said, without guessing at timelines.

Why people choose private treatment

The reasons are mostly practical. Some people do not meet the earliest NHS groups, some do not want to wait for rollout to reach them, and some prefer the flexibility of a private pharmacy. Private treatment still needs a proper clinical review. It is not a shortcut around safety.

With us, the free online consultation is reviewed by a GPhC-registered prescriber, we dispense from our registered pharmacy, and delivery is free and next-day with temperature-controlled packaging. Same-day dispatch applies when ordered by 3pm. Saturday delivery is £14.99. Ongoing monthly reviews and side-effect support come with treatment.

NHS prescriptions and charges

If you do receive a prescription through the NHS in England, the standard NHS prescription charge of £9.90 may apply per item unless you are exempt. Your pharmacy or GP can confirm what applies to you.

Can you use both?

How NHS and private care fit together depends on local services. If you are on an NHS waiting list and also considering private treatment, tell both teams. Clear communication avoids duplicated treatment and keeps your records accurate.

Planning rather than waiting

Whatever route you choose, treat the decision as a plan, not an impulse. Think about how long you might use the medicine, what lifestyle changes you will make alongside it, and what you will do if you stop. Our weight loss clinic page outlines the broader support around treatment.

09 · Safety and side effects

Safety, side effects and the dangers people ask about

Like all medicines, Mounjaro can cause side effects, and most are digestive. The most common, affecting more than 1 in 10 people, are nausea, diarrhoea, vomiting, constipation and abdominal discomfort. Side effects are most likely when starting treatment or moving up a dose, and for most people they ease within days to a few weeks as the body adjusts.

What "the hard truth" about these medicines really is

The honest summary is balanced. These are effective licensed treatments with a meaningful evidence base, and they also need a prescriber, a gradual dose increase and a sustained commitment to diet and activity. They are not magic, and they are not harmless. Treatment is intended to work alongside a reduced-calorie diet and increased physical activity, not instead of them.

Another truth is that weight can be regained after treatment stops in many people, which is why long-term planning matters. Continuing treatment is a clinical decision made with a prescriber, not a default.

Potential dangers to take seriously

Report any new or lasting symptom to your prescriber, and get medical help straight away if you feel seriously unwell. Any big change in weight, appetite and routine can affect how you feel. Tell your prescriber about any history of depression, and seek help promptly if your mood drops.

If you have thoughts of harming yourself or ending your life, get help straight away. Call 999 or go to A&E if you are in immediate danger. In England you can call NHS 111 and choose the mental health option, any time. You can also call Samaritans free on 116 123, day or night. Tell your prescriber about any change in your mood while taking Mounjaro.

Reporting side effects

If you think a medicine has caused a side effect, you can report it through the MHRA Yellow Card scheme.¹⁹ Reporting helps regulators spot patterns. A symptom that is not on the full list of side effects in the UK patient leaflet is not a listed side effect, but tell your prescriber about any new or lasting symptom.

Counterfeit and unverified supply

Counterfeit medicines are a real risk for products in high demand. The MHRA publishes counterfeit alerts.⁷ Our Mounjaro comes through official LillyDirect supply, direct from Eli Lilly's UK distribution, as genuine KwikPens. You can verify us on the GPhC register.

What to avoid

Avoid sellers who skip the consultation, who promise specific results, who describe unlicensed products with brand names, or who suggest dose stretching or extra doses. Avoid treating supplements marketed with names suggesting they are natural versions of prescription medicines as equivalent. Low-cost supplements have no clinical oversight and are not comparable to the licensed medicines.

Lastly, a note on rumours. People sometimes ask about ingredients such as venom in Ozempic. The accurate source for what any medicine contains is its patient information leaflet, which lists the active substance and the other ingredients. Read it rather than relying on social media.

10 · Cost, ordering and storage

Cost, ordering and storing your pen

Mounjaro costs £169.99 for the 2.5mg starter pen at standard price, and a new customer's first order is £40 less with code FIRST40. Each pen lasts four weeks, so the figures are monthly. You can see every strength on the Mounjaro pen page, with current availability in stock.

Planning the cost over time

Treatment is not a single purchase, so it is worth planning in advance. 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 first year of 13 pens costs £2,711.88 if you settle at 5mg, up to £3,599.88 at 15mg. These totals are before discounts. A new customer's first order is £40 less, and every later order is £25 less (code DOSE25). If you settle on another dose, use that dose's monthly price: £279.99 at 7.5mg, £290.99 at 10mg or £319.99 at 12.5mg.

If you are switching to us from another provider at a higher dose, the new-customer discount still applies to your first order at any dose. Prices were checked 10 October 2026.

How ordering works

You complete a short free online consultation, with no charge and no obligation. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full. If the order is unsuitable, it is refunded automatically. We then dispense from our registered pharmacy, with same-day dispatch when ordered by 3pm, and free next-day tracked delivery in discreet, temperature-controlled packaging. Needles, a sharps bin and injection guidance come with every order.

You can pay by Visa or Mastercard, Klarna or pay-monthly options. There are no subscriptions, and repeat orders re-check suitability rather than auto-shipping.

Storing your pen

Store unopened pens in the fridge at 2–8°C until first use, and they keep until the printed expiry date.¹³ Once in use, a KwikPen is licensed for up to 30 days (not above 30°C) out of the fridge.¹ If an unopened pen has been out of the fridge, check the patient information leaflet and contact the pharmacy rather than guessing. Past the tested window, sterility and potency are no longer assured.

Support after you order

Our team is available Monday to Friday, 9am to 5pm, by email at support@everydaymeds.co.uk, by account portal chat or by phone on 0333 207 0413. Ongoing monthly reviews, dose titration and follow-up assessments by the prescribing team are part of treatment. You can also track your progress with GLPTrackr, our free companion app for iOS and Android.

Consultation is free, the price shown is the price paid and there are no hidden fees.

11 · Other things people mean

Other things people mean by "GLP-1 solution"

The phrase is used loosely online, and it can point to liquids, oral products, lab tests or whole programmes. Being clear about which you mean protects both your health and your wallet.

Liquids and drops

Anything described as a liquid GLP-1 product needs careful scrutiny. Licensed GLP-1 medicines are prescription injections and tablets. Products sold as drops or tonics are not equivalent, and dosing is not standardised for them. Our guide to liquid GLP-1 products looks at what is and is not legitimate. Liraglutide, for context, is supplied at a concentration of 6mg per millilitre, but it is a prescription daily injection, not a drink.

Oral solutions and tablets

Tablet-form GLP-1 treatments exist, namely Wegovy tablets and Foundayo, and each has its own product information. See current Wegovy tablet prices on the product page. For a broader view of what is available by mouth, read our guide to the oral GLP-1 route.

Lab tests and assays

The phrase is also used for laboratory measurement of the GLP-1 hormone rather than for treatment. That is a research or diagnostic topic, entirely separate from taking a medicine. If that is what you are after, our short explainer on the GLP-1 assay covers it. Measuring the hormone is not a way of deciding whether a medicine is right for you.

Supplements sold as natural alternatives

Products marketed as natural versions of prescription GLP-1 medicines are low-cost supplements with no clinical oversight. They are not licensed medicines, and dosing is not standardised. They are not on the same footing as licensed treatment that has been through clinical trials.

Programmes and apps

Some companies bundle coaching, apps or meal plans under a GLP-1 label. These can be helpful, but they are not a substitute for the prescriber review. If you want a tracking tool, GLPTrackr is our free companion app, and it is separate from the clinical decision about whether to start a medicine.

A quick test for any claim

Ask four questions. Is it a licensed medicine? Is there a prescriber review? Can I verify the pharmacy on the GPhC register? Does the seller avoid promising specific results? If the answer to any is no, step away. Genuine treatment is supplied only after an online consultation reviewed by a GPhC-registered prescriber, used alongside a reduced-calorie diet and increased physical activity. Individual results vary, and this is information, not a substitute for medical advice.

12 · Serious side effects

Serious side effects: when to get help straight away

Serious side effects are uncommon but need urgent attention. Seek immediate medical help for: severe, persistent stomach pain that may spread to your back, with or without vomiting (possible pancreatitis); pain in the upper right abdomen, fever or yellowing of skin/eyes (possible gallbladder problems); or signs of a severe allergic reaction such as swelling of the face or throat and difficulty breathing. If you take insulin or a sulfonylurea alongside Mounjaro, watch for low blood sugar (shakiness, sweating, confusion) — your prescriber may need to adjust those medicines.¹