Mounjaro: When To Increase Your Dose (October 2026)

01 · Quick answer

Quick answer: when to increase your Mounjaro dose

Increase your dose only when you have completed the minimum time on your current strength and your prescriber agrees it is right for you. Everyone starts Mounjaro on 2.5mg once a week. This starting dose is about letting your body adjust, not about weight loss itself. After at least 4 weeks the dose increases to 5mg, and can then step up by 2.5mg at a minimum of 4-week intervals (7.5mg, 10mg, 12.5mg) up to a maximum of 15mg weekly, depending on how you respond and tolerate it.¹

The key word is minimum. Reaching the earliest permitted date does not mean you must increase. Many people stay on a step for longer because it is working and feels comfortable. Your prescriber will guide the right pace.¹ If you want a date-by-date walkthrough, see our week by week dose guide.

The dose ladder describes a range, not a requirement to climb all of it. Many people settle at a maintenance dose of 5mg, 10mg or 15mg, and higher is not automatically better.¹

02 · Your decision

Should I increase my Mounjaro dose?

You should consider increasing if the minimum time has passed, you tolerate your current dose well, and the benefit you noticed has faded or stalled. You should wait if side effects are still troublesome, if you have only just started a new step, or if you are still losing steadily.

Ask yourself these questions before contacting your prescriber:

• Have I completed at least the minimum time on this strength?
• Are side effects mild, predictable and settling rather than getting worse?
• Has my appetite control or my weight trend changed over several weeks, rather than over a single day?
• Am I still following a reduced-calorie diet and staying active, which treatment is designed to work alongside?²

If you can answer yes to all of them, a conversation about stepping up is reasonable. Our guide on how do I know when to increase Mounjaro goes through the signs in more detail, and whether you need to increase at all covers the people who do well staying put.

If you are an EverydayMeds customer, dose changes are part of the ongoing monthly reviews with our prescribing team. If you are ready to start or continue treatment, you can see the Mounjaro pen prices and consultation; all six strengths are in stock.

03 · Why doses increase

Why do you increase Mounjaro dose at all?

The dose goes up gradually because the body needs time to adjust, and because the starting strength is not meant to be the long-term one. The 2.5mg starting weeks are about adjustment, not weight loss itself.¹ Stepping up slowly gives your digestive system time to get used to the medicine, which is why side effects tend to be easier to manage than if you began at a high strength.

The second reason is response. Tirzepatide activates the GIP and GLP-1 receptors, which help regulate appetite and slow how quickly the stomach empties.¹ Most people feel fuller sooner and less hungry between meals. For some, a lower strength delivers enough of that effect. For others, a higher strength is needed to keep appetite control where they want it. That is why the licence allows a range of strengths and says the dose depends on how you respond and tolerate it.

The third reason is evidence. 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. They show that benefit at different strengths exists, not that everyone needs the top strength. Many people do well at the middle or lower steps.

It is also worth reading about what happens when you increase your Mounjaro dose, and the wider picture of what happens when you increase a GLP-1 dose, if you want to understand the body-side changes before you step up.

04 · Signs you may be ready

Signs you may be ready to increase

The clearest sign is that your current dose was working and has stopped doing so, while side effects are no longer a problem. Several patterns commonly prompt a conversation with a prescriber.

Appetite control fading. If hunger or constant thoughts about food return earlier than they used to, particularly towards the end of the injection week, the current strength may be giving less benefit than before. Note how long this has gone on. A single hungry day is not a trend.

A plateau over several weeks. Judge progress by trend, not individual weigh-ins. Early loss includes water weight, so the pattern over weeks matters more than any single reading.¹ If your trend has been flat for several weeks despite sticking to your plan, raise it.

Good tolerance. Mild nausea, altered appetite and tiredness in the first days after each injection are the commonest early effects and usually settle.¹ If these have settled on your current step, your body has adjusted, and a further step is more likely to be comfortable.

You have completed the minimum time. This is the gate, not the trigger. Without it, nothing else matters. If you are curious how soon this can happen, see how quickly you can increase your Mounjaro dose.

None of these signs replaces a prescriber review. They are prompts to start the conversation, and your prescriber will weigh them against your health, your side effects and your goals. For a practical perspective on tips and pacing, our dose increase tips guide adds more.

05 · Signs to wait

Signs you should wait or hold your dose

Wait if side effects are still significant, if you are still losing steadily, or if you have only recently moved up. Holding a dose is a legitimate and common choice, not a failure.

Side effects are not settling. If nausea, stomach discomfort or tiredness is getting worse rather than easing over the weeks on your current step, a higher strength is unlikely to help. Our page on whether Mounjaro side effects increase with dosage explains what to expect at each step.

You are still making progress. If your trend is moving the right way and your appetite is under control, there is no reason to change something that works. Stepping up simply because the date has arrived adds side-effect risk without clear benefit.

You have only just increased. Early on a new step you may feel stronger effects for a few days after each injection. Give your body time to settle on the new strength before judging it.

You have missed doses or changed your routine. If injections have been irregular, fix consistency first. Your pattern may not reflect the dose at all. Read the patient information leaflet for what to do after missed doses and ask your prescriber if you are unsure.¹³

If you feel unwell in a way that worries you, contact your clinical team. For severe, persistent stomach pain, pain in the upper right abdomen with fever, yellowing of the skin or eyes, swelling of the face or throat or difficulty breathing, get medical help straight away.

06 · What not to do

What not to do when changing dose

Do not change your dose outside the licensed schedule or without your prescriber.

Do not increase early. The schedule sets a minimum interval between increases. Moving up sooner is outside the licence.

Do not double up after a missed dose. If you miss a dose, take it as soon as you can within 4 days (96 hours) of the scheduled time, then carry on with your usual day. If more than 4 days have passed, skip the missed dose entirely and take the next one on your normal day; never take two doses within 3 days of each other.¹

Medicines bought from sellers offering to supply without a consultation or prescription carry extra risk, including counterfeit pens. Use a regulated pharmacy, and report any suspected side effect through the Yellow Card scheme.⁷

07 · Maintenance dose

Maintenance dose: where the climb stops

You stop increasing when your current dose gives you the benefit you need with side effects you can live with. That is your maintenance dose, and it is individual. Many people settle at a maintenance dose of 5mg, 10mg or 15mg; higher is not automatically better.¹

It helps to think of the maximum dose as a ceiling, not a goal. The licence allows up to 15mg weekly, but nothing says you must reach it. Someone doing well at a lower or middle strength gains nothing by pushing further, and may meet more side effects.

The trial data show benefit across strengths. 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 These are trial averages and individual results vary, so they do not predict your own result.

If you reach the top and progress stalls, speak to your prescriber, because there is no higher dose. Your prescriber can discuss continuing, adjusting or stepping down, and the broader weight loss clinic pages explain how treatment fits into a longer plan alongside diet and activity.

08 · Reviewing your response

How your response is reviewed

Your prescriber reviews how you are responding to treatment. Weight loss on Mounjaro is gradual by design. The first weeks on 2.5mg are an adjustment phase and losses are usually modest; most measurable progress builds from 5mg onward, month by month.¹

Experiences in the early weeks differ widely. Some people notice appetite change and early loss in the first week, others feel little until a higher dose; both are normal.¹ That is one reason not to judge the starting dose by weight change alone.

There is also a formal checkpoint. If you have lost less than 5% of your starting weight after 6 months on the highest dose you can tolerate, your prescriber will discuss whether continuing or stopping is right for you.¹ Note the wording: the highest tolerated dose. It does not mean you must reach 15mg; it means the highest you can comfortably take.

Trials measured results at 72 weeks, so think in months, not days. Keep a simple record of your weekly weight trend, appetite, side effects and injection day. Our free companion app GLPTrackr can help you log your journey, and having a record makes a dose conversation much more productive.

09 · After you increase

What to expect after you increase

Expect your usual early effects to return briefly after a step up. Mild nausea, altered appetite and tiredness in the first days after each injection are the commonest effects and usually settle.¹ A new strength can bring them back for a short time.

A few practical points help:

• Inject on the same day each week. There is no best time of day: Mounjaro works the same morning or evening, with or without food, and what matters is consistency.¹
• Many people choose a weekend morning so early side effects fall on days off, which can make a step-up easier to manage.
• Rotate your injection site each week. Licensed sites are the stomach area, the front of the thigh, or the back of the upper arm if someone else gives the injection.¹
• You can change your injection day if needed, as long as at least 3 days (72 hours) have passed since your last dose.¹
• Each KwikPen contains four weekly doses, so a new strength means a new pen; do not mix up the pens in your fridge.

Keep pens in a fridge at 2–8°C and never freeze them. Once in use, a pen can be kept out of the fridge not above 30°C for up to 30 days, after which it should be discarded.¹

If effects feel stronger than you can manage, or do not ease over the weeks, contact your prescriber. If you cannot keep fluids down, contact your clinical team, because dehydration needs medical help straight away. You can also report side effects via the Yellow Card scheme.⁷

10 · Cost of higher doses

Does the cost change as the dose goes up?

Yes, each strength has its own pen price, so stepping up changes your monthly cost. As of October 2026, the 5mg pen costs £189.99 per month and the 10mg pen £274.99; prices were checked 28 October 2026. These are standard prices. New customers save £40 on their first order with code FIRST40, and an automatic £25 reorder discount applies to every future order (code DOSE25).

For the full picture across the ladder, see whether the Mounjaro price increases with dosage.

The consultation is free, and the price shown is the price paid. Our ongoing monthly reviews include dose-titration and follow-up assessments by the prescribing team, so you do not need to work out the next step alone. Repeat orders re-check suitability, and there is no auto-shipping.

11 · Access and eligibility

Who can use Mounjaro, and how it is supplied

Mounjaro is a prescription-only medicine supplied after an online consultation reviewed by a GPhC-registered prescriber. It is used alongside a reduced-calorie diet and increased physical activity, and individual results vary.¹ In the UK it is licensed for weight management in adults and for type 2 diabetes.

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.⁴ Many people who meet the licensed criteria choose regulated private treatment rather than waiting. Whichever route you use, dose changes should always be made with your prescriber, never by yourself.

EverydayMeds is a GPhC-registered pharmacy (9012878), supplying genuine KwikPens through official LillyDirect supply, with free next-day tracked delivery in temperature-controlled packaging. Our support team is available Monday to Friday, and you can reach us by email, account portal chat or phone.

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