Why You Might Not Be Getting Suppression on Mounjaro (October 2026)

01 · Start here

What to do first if you feel no appetite suppression

Start by checking four things: your dose, how long you have been on it, how you are eating, and whether your pen is being used as the instructions describe. Most cases of quiet appetite come back to one of those, and none of them needs you to change anything yourself before you speak to a prescriber.

Mounjaro is the brand name for tirzepatide, a once-weekly injection that activates two gut-hormone receptors, GIP and GLP-1. Together these help regulate appetite and slow how quickly the stomach empties.¹ In practice, most people feel fuller sooner and less hungry between meals. This is a shift in how hungry you feel, not the end of all interest in food.

If you are still on the starting pen, it can be worth reading our guide on not losing weight at 5mg, which covers the next step up from the starter dose.

02 · Cost and next steps

What it costs to continue while you work this out

You do not have to decide anything about price before you speak to a prescriber, but cost is a fair part of the conversation. The Mounjaro pen is priced per four-week pen. At the standard price, 2.5mg is £169.99, 5mg is £189.99 and 7.5mg is £244.99.

A new customer saves £40 on their first order at any dose with code FIRST40, including people switching to us from another provider at a higher dose. An automatic £25 reorder discount applies to every future order (code DOSE25). A first year costs £2,399.88 at standard prices if you stay on 5mg after your 2.5mg starting pen, up to £3,279.88 if you step up through every dose to 15mg; first orders are £40 less and later orders £25 less. All six doses are in stock.

Dose changes are a prescriber decision, so we would never suggest paying for a higher strength just because appetite feels quiet. The right sequence is review first, then dose. Our monthly clinical reviews are included, and repeat orders re-check suitability with no auto-shipping.

03 · Ordering and reviews

How to get a review or start treatment with us

If you are not yet on treatment, or want a fresh prescriber view, the process has three steps. Our free online consultation is a short health questionnaire 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. Approved orders are dispensed by our registered pharmacy, with same-day dispatch when ordered by 3pm and free next-day tracked delivery in temperature-controlled, discreet packaging.

We supply genuine Mounjaro KwikPens directly through official LillyDirect supply from Eli Lilly's UK distribution. Needles, a sharps bin and injection guidance come with every order. Support runs Monday to Friday, 9am to 5pm, on 0333 207 0413 or support@everydaymeds.co.uk. If you want to compare other options first, see all weight loss treatments.

04 · What suppression means

What "appetite suppression" on Mounjaro actually means

Appetite suppression on Mounjaro means feeling fuller sooner and less hungry between meals, not losing all interest in food. Tirzepatide activates the GIP and GLP-1 receptors, which help regulate appetite, slow how quickly the stomach empties and improve how the body responds to insulin.¹ The practical result for most people is that a reduced-calorie diet becomes easier to follow.

This matters because many people expect a dramatic change. They imagine they will forget to eat, or never think about food. When that does not happen, they decide the medicine is not working. But the effect is a supporting one, making eating less feel more manageable rather than effortless.

It also helps to separate the different things people mean by suppression. You might be looking for: less hunger before a meal, feeling full after a smaller portion, fewer thoughts about snacking, or simply a quieter evening. These are related, but they are not identical, and you may notice one before the others.

The mechanism also explains why the effect is easiest to notice around meals. Slower stomach emptying and earlier fullness show up when you are eating, which means a day with irregular meals can hide the pattern. If you graze, skip breakfast or eat in front of a screen, the signal is harder to spot.

A useful way to test this is to pay attention to the point in a meal when you would normally want seconds. Note whether that point has moved, and by how much, over a couple of weeks. A small shift is still a shift, and it is the kind of detail your prescriber can use at a review.

Finally, remember that Mounjaro is a prescription-only medicine used alongside a reduced-calorie diet and increased physical activity. It is not a replacement for those habits, and the appetite effect is there to support them.

05 · Dose and the starting pen

Does your dose explain a quiet appetite?

Dose is one of the first things to look at, because Mounjaro comes in six strengths (2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg) and the trial results differ between them.¹ 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. These are trial averages and individual results vary.²

It is not for you to decide when to step up. Your prescriber chooses the dose based on your response, your tolerance and your health history. If you are asking whether you should move up, the useful move is to bring your notes to a review rather than act alone.

If you feel the dose is not doing enough, say so, and let a clinician decide. Our ongoing monthly reviews exist for this kind of question, and dose-titration is handled by the prescribing team.

If you are on 5mg and wondering what to expect, read our page on what to expect on 5mg. If weight has plateaued after earlier progress, that is a separate situation to discuss with your prescriber.

06 · Hunger types and habits

Different kinds of hunger and why some stay put

Not all wanting to eat is the same, and a medicine that helps regulate appetite works on some of it better than others. It helps to name what you are experiencing so that you can describe it clearly to a prescriber.

Physical hunger is the empty, stomach-led feeling that builds between meals. This is the area the mechanism speaks to most directly, since tirzepatide helps most people feel fuller sooner and less hungry between meals.¹

Habit eating is different. It is the biscuit with the afternoon tea, the snack while the television is on, the second helping because the plate is there. These are driven by routine and context, and no medicine removes the routine itself. If your eating is mostly cued by time or place, you may feel that nothing has changed even when your stomach is more settled.

Emotional or stress eating is another category. Boredom, tiredness, a bad day at work: these push people towards food regardless of physical hunger. Noticing which of these applies on a given day is a skill you can build, and a diary makes it easier.

Taste and reward also play a part. Foods that are high in sugar or fat are appealing even when you are not hungry, and being full does not always stop the wish for something sweet. Keeping a note of what you want and when can show whether it is hunger or desire.

Try a simple record for two weeks: the time, what you ate, how hungry you were before (low, medium, high), and how full you felt after. You are looking for patterns rather than perfection. Our free companion app GLPTrackr (iOS and Android) is designed for tracking a GLP-1 journey, so you can keep notes in one place.

When you share that record at a review, your prescriber has real information to work with. "I have no suppression" is hard to act on. "I still want a snack at 4pm but I feel full sooner at dinner" is far more useful, and it often shows that the medicine is doing something even when it is not doing everything.

07 · Diet and activity

Eating habits that can mask or support the effect

Mounjaro is licensed to be used alongside a reduced-calorie diet and increased physical activity, and that pairing is part of how the trial results were achieved.² The medicine is not intended to work instead of these habits, which means the way you eat shapes how much of the effect you notice.

Consider the pace of eating first. Because fullness arrives sooner, eating quickly can mean you overshoot before the signal is felt. Slowing down, putting the fork down between mouthfuls and stopping when you first feel satisfied gives the effect room to show.

Meal rhythm is next. Some people skip meals because they expect to feel no hunger, then find themselves very hungry later and eat more than they intended. Regular, planned meals make it easier to notice when hunger is present or absent, and they take pressure off the evening.

Liquid calories can also blur the picture. Drinks with sugar, cream or alcohol add energy without much sense of fullness, so you may feel no suppression while still taking in a lot. A short look at what you drink across a week can be revealing.

Food environment matters too. Keeping tempting snacks in view makes habit eating much harder to resist. Moving them out of sight, or not buying them, is a small change that does not rely on willpower alone.

On activity, the licence refers to increased physical activity, not a particular programme. Walking more, using stairs or adding a class counts.

Lastly, avoid the trap of eating very little because you expect the medicine to do the work. Your prescriber can advise on a sensible intake. If you feel very unwell, are not eating at all or are struggling to drink, speak to a clinician rather than push on.

If you are also dealing with stomach symptoms that affect what you can eat, our page on heartburn on Mounjaro may help.

08 · Appetite versus results

Is Mounjaro working if appetite does not change?

In SURMOUNT-1, people on tirzepatide alongside diet and exercise lost on average 15% of body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, against 3.1% with lifestyle changes alone. 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 those on 10mg and 57% on 15mg lost at least 20%.² These are trial averages, they do not predict your own result, and individual results vary.

As a worked example only: for someone starting at 100 kg, 15% is about 15 kg and 20.9% is about 21 kg. That is simple arithmetic on the trial percentages, not a forecast, and it says nothing about how fast any loss will arrive.

The measures worth keeping are your weight trend over several weeks rather than day to day, how your clothes fit, your portion sizes, and how you feel around meals. A single weigh-in can mislead. A pattern across a month tells you far more.

It is also worth being honest about what the trial figures show: they are averages from a large group, and some people lose more and some less. If your result is lower than an average, that is not by itself a sign that something is wrong, but it is a good reason to talk to your prescriber.

Many readers ask whether they are a "non-responder". A review looks at your dose, how long you have been on it, how you are eating and your health history, then decides on the next step.

If your weight has stopped moving after an earlier period of loss, the page on why you may not be losing weight on Mounjaro goes through the common causes in more detail.

09 · Pen use and supply

Pen use, storage and where your medicine comes from

If you feel nothing at all, it is reasonable to check how the pen is being used and where it came from. Mounjaro is a prescription-only medicine supplied in a pre-filled multi-dose KwikPen, and the patient information leaflet and the instructions with your pen are the authority on how to use it.¹³ Follow the pen's instructions for the injection itself.

On storage, unopened pens are kept in the fridge until first use and keep until the printed expiry date. Once in use, a pen can be kept out of the fridge at a temperature not above 30°C for up to 30 days after first use, and must then be thrown away.¹³ If a pen has been left somewhere warm, has passed its expiry, or you are unsure how it was stored, do not guess. Sterility and potency are no longer assured outside the tested window, so contact the pharmacy that supplied it and check the leaflet.

For unopened pens that have spent time out of the fridge, check with the pharmacy before using them. The leaflet and the dispensing pharmacy are the right places to ask.

Supply matters just as much. Counterfeit and unregulated products circulate online, and the MHRA publishes counterfeit medicine alerts.⁷ A product from a seller offering to supply without a consultation or prescription is a warning sign. We supply genuine KwikPens through official LillyDirect supply from Eli Lilly's UK distribution, dispensed by a GPhC-registered pharmacy, and you can check our registration on the GPhC register.

If your pen came from elsewhere and you feel no effect, that is a good reason to speak to a pharmacist before assuming anything about your dose. Do not keep injecting a product whose origin you cannot verify.

Finally, if your pen seems to be faulty, damaged or the wrong item, contact us within 3 days of delivery. Dispensed prescription medicines cannot otherwise be returned, and refunds take 5 to 10 working days. If you are still deciding where to buy, our page to buy Mounjaro online in the UK explains how our service works.

10 · Other factors and safety

Other factors, new symptoms and when to speak up

If your appetite feels unchanged, other factors in your life or health may be part of the picture, and a prescriber is the right person to look at them.

Eligibility is the first point. Mounjaro is licensed for weight management in adults with a BMI of 30 or above, or a BMI 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. A prescriber assesses your BMI, medical history and current medicines before deciding whether it is suitable.¹ If your circumstances have changed, mention it at your next review.

Current medicines are the second point. Tell your prescriber about everything you take, including anything bought over the counter. Mounjaro can reduce absorption of oral contraceptives because stomach emptying slows, and the MHRA has issued guidance on this.⁷ 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 If you take insulin or sulfonylureas, doses may need adjusting because of the risk of low blood sugar, so do not change them on your own.

Supplements and "natural" alternatives deserve caution. Low-cost supplements are available without assessment and carry no clinical oversight, and dosing is not standardised. They are not a substitute for a prescribed treatment, and we would advise against adding them to chase a stronger effect without asking a pharmacist or prescriber first.

If you are experiencing symptoms that are new to you, such as persistent nausea or anything that worries you, tell your prescriber. For severe, persistent stomach pain, get medical help straight away. Headaches are one example people ask about; our page on headaches on Mounjaro covers what to do.

You can also report suspected side effects yourself through the MHRA Yellow Card scheme.¹⁹ Reporting helps regulators monitor safety and takes a few minutes.

Price is also part of why some people consider changing course. That should never push anyone to alter a dose or use a pen beyond its instructions; a review is the safer route.

11 · NHS, private and next steps

NHS or private: where to take your concern

Wherever you get Mounjaro, your concern about weak appetite suppression belongs with the clinician who prescribed it. That might be your NHS service, your GP or your private prescriber, and the aim is the same: a review of dose, response and suitability.

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.

With a private provider, follow-up should be built in. Ours includes ongoing monthly reviews, dose-titration and follow-up assessments by the prescribing team, plus side-effect support. Repeat orders re-check suitability, and there is no auto-shipping, so you never receive a pen you have not chosen to continue.

Before a review, prepare three things. First, your current dose and how long you have been on it. Second, your two-week hunger and meal record. Third, a short list of questions: for example, whether your dose is appropriate, whether anything in your medicines or health could matter, and what to expect over the next month.

Keep realistic expectations about what a review can offer. A prescriber may keep your dose the same, may adjust it, or may advise further monitoring. Each is a legitimate outcome, and none should be pushed by cost or impatience.

Payment is flexible if you continue with us: Visa or Mastercard, Klarna and pay-monthly options, with no subscriptions. Our consultation is free, the price shown is the price paid, and there are no hidden fees. If you are new to us, the consultation is the natural place to start, and a GPhC-registered prescriber reviews every application.

If treatment is not suitable, or you decide it is not for you, that is a legitimate result of an honest review. Mounjaro is a prescription-only medicine used alongside a reduced-calorie diet and increased physical activity. Individual results vary, and this page is information, not a substitute for medical advice.

12 · What not to do

What not to do when appetite feels quiet

When the effect is weaker than you hoped, the temptation to take matters into your own hands is strong, and several common moves are unsafe or unhelpful. Knowing them in advance can save you from a mistake.

Do not inject more often than prescribed.

Do not move to a higher strength by buying it yourself from an unregulated seller. Genuine supply and a prescriber review go together, and a seller who skips the consultation is a risk to you.

Do not combine Mounjaro with other weight-loss products without advice. Unlicensed combinations carry unknowns, and nobody should recommend them in the absence of clinical oversight. Ask a pharmacist before adding anything.

Do not judge the medicine on a single day or week. Appetite varies with sleep, stress, hormones and routine. A short run of quiet days tells you little, which is why a record over several weeks is more useful.

Do not cut food very low to compensate. The licence is for a reduced-calorie diet, not an extreme one, and your prescriber can advise on what is sensible. If you cannot keep fluids down, contact your clinical team — dehydration needs medical help straight away.

Do not stop treatment suddenly without speaking to someone. Tirzepatide has a half-life of about five days, so after a final dose it takes roughly 4 to 5 weeks to clear the system.¹ There is no way to speed this up, and nothing needs doing while it clears. That is useful to know if you decide to stop, but it is no reason to stop without talking to your prescriber first.

And do not rely on the trial averages as a personal target. They describe groups, and individual results vary. Your own plan should be set with your prescriber.

13 · 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