7.5g Mounjaro: The 7.5mg Dose Explained (October 2026)

01 · The core answer

Is 7.5mg the right dose for you?

Mounjaro 7.5mg is the right dose only if your prescriber says so, because the dose is chosen from your response and tolerability rather than from a fixed calendar. Mounjaro is a once-weekly injectable prescription medicine made by Eli Lilly, and the pen strengths are 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.¹ The 7.5mg pen is the third step.

The medicine is measured in milligrams of tirzepatide, and the pen is a multi-dose KwikPen, so the strength on the label is the figure that matters. If you have been mixing up units, our guide to mixing up mg and ml explains why the pen is labelled the way it is.

02 · Your decision

Stay on 7.5mg or step up?

The honest decision at this dose is whether to stay put or move up, and that depends on three things you can describe to your prescriber: how your appetite feels between meals, how you are tolerating the medicine, and whether your weight and measurements are moving in the right direction over several weeks. A single quiet week is not a reason to change dose.

Tirzepatide helps regulate appetite and slows how quickly the stomach empties, so most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet.¹ If that effect is still clearly present and you are losing weight steadily, there may be no reason to change. If appetite has crept back and side effects are mild, your prescriber may discuss a higher strength. If side effects are troublesome, staying on the current strength for longer is a legitimate choice.

Any change goes through your prescriber, who reviews you at each repeat order. If you are working out cost as you go, a 7.5mg pen is £279.99 at the standard price, and the earlier 5mg step is £218.99.

03 · Next step

How to get Mounjaro 7.5mg

You get 7.5mg through a free online consultation that is reviewed by a GPhC-registered prescriber, who decides whether and at what strength to prescribe. Mounjaro is a prescription-only medicine, used alongside a reduced-calorie diet and increased physical activity, and individual results vary. The process has four steps.

• Free online consultation: a short health questionnaire, with no charge and no obligation.
• Prescriber review: assessed 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, discreet packaging. Saturday delivery is £14.99.

If you are already on another provider's 7.5mg pen and want to move, you can start with us at your current strength; the Mounjaro pen page shows live prices and the consultation, and all six strengths are in stock. Your first order is £40 less with code FIRST40, and an automatic £25 reorder discount applies to every future order (code DOSE25). The price shown is the price paid, and there are no subscriptions.

Related guides: 5g mounjaro and Mounjaro 5g price.

04 · Mg, g and ml explained

Why 7.5g is really 7.5mg

Mounjaro is never dosed in grams, so "7.5g Mounjaro" almost always means the 7.5mg KwikPen. The mistake is easy to make because phone keyboards, forums and social posts blur the units, and because a gram is a thousand times larger than a milligram. Always check the strength printed on your pen and dispensing label, and make sure you use the unit milligrams (mg) in your own notes.

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. It comes as a pre-filled multi-dose pen (KwikPen) in six strengths: 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.¹ Those milligram figures are the strength of the pen, which is what your prescriber chooses.

Millilitres cause a second confusion. Some injectable medicines are described by concentration, such as liraglutide, which is supplied at 6mg/ml and is a daily injection, unlike once-weekly Mounjaro. For Mounjaro, the thing you set and check is the strength printed on the pen and on your dispensing label, not a volume you draw up yourself. The KwikPen is a pre-filled device, so there is no syringe to fill and nothing to measure out.

A practical habit helps. When you log your injections, write the strength as milligrams, the date, and the injection site, and keep the same format every week. If you use an app, our free companion app GLPTrackr is designed for tracking a GLP-1 journey and is available on iOS and Android. If anything on your label looks different from what you were told, stop and contact the pharmacy or your prescriber before injecting.

Finally, if you see a seller advertising Mounjaro by weight in grams, pills, powders or vials without a consultation or prescription, treat it as a red flag. Genuine Mounjaro is a branded KwikPen supplied on prescription. Our supply is official LillyDirect supply, sourced directly from Eli Lilly's UK distribution, and the MHRA publishes counterfeit medicine alerts and runs the Yellow Card scheme for reporting problems.⁷

05 · Where 7.5mg sits

Where 7.5mg sits on the dose ladder

The 7.5mg pen is the third of six strengths, so it is a mid-ladder step rather than a starting or a ceiling dose. The ladder runs 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.¹

The 2.5mg pen is the starting strength, and your prescriber steps you up from there. If you step up after at least 4 weeks on each of 2.5mg, 5mg, 7.5mg and 10mg, your first four pens cost £959.96 at standard prices; a new customer's first order is £40 less and every later order £25 less. It is a framework, not a promise: some people stay on a strength for longer, and some find a lower dose is enough.

Why pause at 7.5mg? The reasons are usually practical. Perhaps appetite is well controlled and weight is moving, so there is no need to go higher. Perhaps the previous step caused side effects that have only just settled. Perhaps you are managing other health conditions and your prescriber wants a steadier approach. All of these are valid, and nobody is obliged to reach the top strength; the right dose is the one that works for you with tolerable side effects.

Not every person ends up at 7.5mg. Others continue to 10mg or beyond. The maintenance dose is individual.

Always read the patient information leaflet that comes with the pen.¹³ Our prescribing team also supports you with monthly reviews and side-effect support, which is where decisions about moving up or staying put are made.

06 · How it works

How tirzepatide works at this dose

Tirzepatide works by acting on two gut-hormone pathways at once, and that action is present at every strength, including 7.5mg. Tirzepatide is the first treatment of its kind to activate two natural gut-hormone receptors at once: GIP and GLP-1. Together these help regulate appetite, slow how quickly the stomach empties, and improve the way the body responds to insulin.¹

In practice, most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet. This dual action is what distinguishes Mounjaro from single-action GLP-1 medicines such as semaglutide (Wegovy/Ozempic).¹ That is the whole mechanism in plain terms: the medicine changes appetite and fullness, and you use that change to eat less in a sustainable way.

What the mechanism does not do is remove the need for the other half of treatment. Mounjaro is used alongside a reduced-calorie diet and increased physical activity. If the diet does not change, there is less for the medicine to support. This is the single most useful idea for anyone wondering why the same dose seems to work well for one person and less well for another.

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 If you stop treatment, the effect on appetite fades gradually over several weeks rather than ending overnight, so changes in hunger after stopping will build slowly.

Because the medicine works through appetite and stomach emptying, the sensations you notice are often related to meals: feeling full after small portions, or finding rich or large meals uncomfortable. Pay attention to these signals. They are information about how your body is responding at this dose, and worth passing on at your monthly review.

None of this means more is always better. The point of titration is to find the lowest dose that gives the effect you need with side effects you can live with. For many people that is a mid-range strength, and for others it is higher. Your prescriber will weigh up your progress rather than aiming for a particular number on the ladder.

07 · What trials show

What the trial results say

Published obesity trial results are reported for 5mg, 10mg and 15mg, not for 7.5mg. 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 Trial averages do not predict your own result, and they should not be read as a forecast for 7.5mg specifically, since that strength sits between the figures reported. What the pattern does show is that the strengths either side of 7.5mg were associated with substantial average weight loss, and that higher strengths were associated with larger average losses in that trial.

The spread of outcomes matters as much as the average. 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 Most people in the trial lost a meaningful amount at every strength studied, but a smaller proportion lost a great deal, and some lost far less than the average.

To make the 20.9% figure concrete: for someone starting at 100 kg, 20.9% is about 21 kg.

The trial also shows why time on treatment matters. Results built up across the full 72 weeks, which means that judging a dose after a few weeks is judging it too early. A dose should be assessed over several weeks of steady use, alongside your diet and activity, rather than on the scales from one week to the next.

A separate maintenance trial, SURMOUNT-4, looked at continued treatment for maintaining weight reduction, which is why people are often advised to think of treatment as a longer-term plan rather than a short course.¹⁴ Your prescriber can talk you through what that means for your situation.

08 · If weight loss stalls

If weight loss stalls on 7.5mg

If weight loss slows on 7.5mg, the first step is to review the basics with your prescriber, not to change dose on your own. A plateau is common in any weight-loss effort, and the honest explanation is usually a mix of factors rather than a single cause. Start with a calm audit of the last few weeks.

Consider these questions in turn:

• Time on dose: have you been on 7.5mg long enough for it to show its effect? Judging after only a short spell is premature.
• Injection routine: are you injecting on the same day each week, following the pen's instructions, and storing the pen correctly?
• Appetite signals: do you still feel fuller sooner and less hungry between meals? If that has faded, tell your prescriber.
• Diet: is the reduced-calorie diet still in place? Liquid calories, snacking and larger portions can quietly absorb the effect of reduced appetite.
• Activity: has movement dropped away, for example because of a busy period or low energy?
• Side effects: are symptoms making it harder to eat well or stay active?
• Other medicines and conditions: has anything changed in your health or prescriptions?

Treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them.² That is why the review starts with habits. If the audit finds nothing obvious and appetite control has genuinely weakened, your prescriber may discuss whether a higher strength is appropriate. If it has not, patience and routine often matter more than a bigger dose.

The safer levers are the ones already named: consistent routine, a sustainable calorie reduction, regular activity, sleep and good communication with your prescribing team.

Scales are a blunt tool. Clothes fit, measurements and how you feel can improve even when the number on the scales sits still for a time. Track several signs of progress, and bring that picture to your review. Our early-weeks timeline guide looks at what progress can look like in the early stretch of treatment.

09 · NHS or private

NHS or private access

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.

If you are already on the NHS pathway, your dose is set by the NHS prescriber and you should follow their plan. If you are considering a private route, the dose ladder is the same: the same pens and the same strengths, with 7.5mg a mid-ladder step. What differs is how you get there and who reviews you.

Private treatment is not a shortcut around clinical judgement. A private prescription still depends on a consultation reviewed by a GPhC-registered prescriber, who decides whether Mounjaro is suitable for you. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full. Treatment is used alongside a reduced-calorie diet and increased physical activity, and individual results vary.

When you compare routes, think about more than cost. Consider how often you will be reviewed, who you can contact about side effects, how quickly repeat supplies arrive, and whether the provider checks your suitability at each repeat order. We include ongoing monthly clinical reviews, dose-titration and follow-up assessments by our prescribing team, and side-effect support. Repeat orders re-check suitability, and there is no auto-shipping, so you remain in control of when the next pen is sent.

If you are moving from NHS supply to private, or the other way, tell both prescribers what you have been taking and at what strength, so that no one has to guess where you are on the ladder. Our broader weight loss clinic page explains how our service fits alongside your usual healthcare.

Support is available Monday to Friday, 9am to 5pm, by email at support@everydaymeds.co.uk, through the account portal chat, or by phone on 0333 207 0413.

10 · Cost planning

Planning the cost of 7.5mg

A 7.5mg pen costs £279.99 at the standard price, which is £70.00 per week, and each pen lasts four weeks. That standard price is what a repeat order costs before the reorder discount. A new customer's first order is £40 less with code FIRST40, and every later order is £25 less than the standard price, applied automatically (code DOSE25). The discount applies at any dose, including if you are switching to us from another provider at a higher strength.

To see where 7.5mg fits in the bigger picture, it helps to compare the phases of treatment at standard prices, before any discounts.

There is no year total shown for settling at 7.5mg, so use the monthly figure of £279.99 per pen when planning that route. Likewise, 10mg is £290.99 and 12.5mg is £319.99 per pen at standard prices. These are standard prices; a new customer's first order is £40 less and every later order £25 less.

Across the UK pharmacies we track, Mounjaro pens ranged from £143.96 to £339.00 across all doses and providers as of 10 October 2026, and the gap between providers for the same dose ran from £27 to £41. Prices differ because of how each provider buys and prices the product, so compare the same strength at the same date rather than quoting a headline from months ago.

Payment options include Visa and Mastercard, Klarna and pay-monthly options, with no subscriptions. The consultation is free, and the price shown is the price paid with no hidden fees. For live prices and to start a consultation, see the Mounjaro pen listing, and for a cost-focused summary of this strength see our 7.5mg prescription guide.

Remember that price should not drive dose. Choose the strength your prescriber recommends, then compare providers on that strength.

11 · Safety and storage

Safety, storage and what to report

Mounjaro is a prescription-only medicine, supplied only after an online consultation reviewed by a GPhC-registered prescriber. It is used alongside a reduced-calorie diet and increased physical activity. Individual results vary.

Side effects are listed in the patient information leaflet supplied with every pen, which also says which symptoms need urgent medical attention.¹³ Read it before your first injection and again when you move to a new strength. If you notice a new symptom that you are unsure about, speak to your prescriber, and you can report suspected side effects through the MHRA Yellow Card scheme.¹⁹

Follow the leaflet and keep eating and drinking normally. If nausea or vomiting is persistent or you cannot keep fluids down, contact your clinical team — dehydration needs prompt attention.

Oral contraceptives deserve a specific mention. 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 Mounjaro can reduce absorption of oral contraceptives because stomach emptying slows.⁷ If you take insulin or sulfonylureas, doses may need adjusting because of the risk of low blood sugar, so tell your prescriber about every medicine you use.

For storage, keep unopened pens in the fridge at 2–8°C until first use, and they keep until the printed expiry date. Once in use, a KwikPen 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. Do not use a pen that has been above 30°C or has been frozen. If you have an unopened pen that has been out of the fridge and you are unsure, check the patient information leaflet and ask the pharmacy rather than guessing.¹³ Follow the pen's instructions for injecting, and dispose of used needles in the sharps bin supplied; needles, a sharps bin and injection guidance come with every order.

Finally, buy only from registered sources. You can check any UK pharmacy on the GPhC register; ours is registration 9012878. Be wary of anyone offering to supply without a consultation or prescription.¹²

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