Mounjaro Dosage UK
The Mounjaro dosage starts at 2.5mg once a week. After 4 weeks it goes up to 5mg, then in 2.5mg steps, each one after at least 4 weeks on the dose before. The maintenance doses are 5mg, 10mg and 15mg, and 15mg a week is the highest Mounjaro dose. Your prescriber sets the pace. This Mounjaro dosage guide shows the chart, the pen, where to inject and what to do if you miss a dose.
Based on the Mounjaro KwikPen patient leaflet
We compare medicines. We do not prescribe or sell them
Mounjaro dosage chart UK
This is the Mounjaro UK dosage set out in the leaflet for the KwikPen. Every dose is one injection a week of 0.6ml. The strength changes as you move up. The volume does not.
| Step | Dose | Time on this dose | What it is | Volume |
|---|---|---|---|---|
| 1 | 2.5mg | 4 weeks | Starting dose. It is not a maintenance dose | 0.6ml |
| 2 | 5mg | At least 4 weeks | First step up. A maintenance dose | 0.6ml |
| 3 | 7.5mg | At least 4 weeks | A step up | 0.6ml |
| 4 | 10mg | At least 4 weeks | A maintenance dose | 0.6ml |
| 5 | 12.5mg | At least 4 weeks | A step up | 0.6ml |
| 6 | 15mg | Ongoing | A maintenance dose, and the maximum | 0.6ml |
Read the Mounjaro KwikPen patient leaflet on the emc
The weeks in the table are the earliest you can move, not a fixed timetable. Many sites show weeks 5 to 8, weeks 9 to 12 and so on as if they were set. The leaflet only says at least 4 weeks. Some people stay on a lower dose for longer, and not everyone goes to 15mg.
Mounjaro dosage schedule: how the dose goes up
The schedule is built to let your body get used to the medicine. Mounjaro is the brand name for tirzepatide, so the tirzepatide dosage is the Mounjaro dosage shown here. Your dose only goes up when your prescriber agrees.
Mounjaro starting dose
Everyone starts on 2.5mg once a week. It is a starting step to let you settle, not a dose meant to be kept. You stay on it for 4 weeks.
Mounjaro dose increase: when and how fast
The leaflet allows a step up of 2.5mg after at least 4 weeks on your current dose. Side effects are most likely after an increase, so your prescriber may hold you on the same dose for longer or go back a step. Do not change the dose yourself. The Mounjaro side effects guide shows what to expect.
Mounjaro dosage for weight loss
The leaflet gives one ladder, whether Mounjaro is used for weight loss or for diabetes. For weight loss, the aim is the highest dose you tolerate that works for you. The leaflet says your prescriber should review treatment if you have not lost at least 5% of your starting weight 6 months after reaching that dose.
What is the best Mounjaro dosage for weight loss?
There is no single best dose. A higher dose is not better for everyone, and the right one is the one you tolerate and that works, which differs from person to person. Your prescriber decides.
Maintenance and maximum Mounjaro dose
What is the maintenance dose of Mounjaro?
The leaflet lists 5mg, 10mg and 15mg as the maintenance doses. Your prescriber works out which one suits you, and you can stay on it.
Mounjaro maximum dose
The most you can have is 15mg once a week. Do not go above it or add extra to speed up weight loss. Many people do well on a lower dose, so 15mg is a ceiling and not a target.
Maintenance doses. 5mg, 10mg or 15mg
Maximum dose. 15mg once a week
Mounjaro strengths, the KwikPen and dosage in ml
Mounjaro strengths run from 2.5mg to 15mg. Each KwikPen holds 4 doses, so one pen lasts 4 weeks when you inject once a week.
| Strength | Dose per injection | Volume per injection | Doses in a pen |
|---|---|---|---|
| 2.5mg | 2.5mg | 0.6ml | 4 |
| 5mg | 5mg | 0.6ml | 4 |
| 7.5mg | 7.5mg | 0.6ml | 4 |
| 10mg | 10mg | 0.6ml | 4 |
| 12.5mg | 12.5mg | 0.6ml | 4 |
| 15mg | 15mg | 0.6ml | 4 |
Mounjaro dosage in ml
Every injection is 0.6ml, whatever the strength. The pen you are given sets the mg, so you never work out a dose from the ml.
Mounjaro KwikPen dosage
Follow the leaflet that comes with the pen. Do not draw the medicine out of the pen with a syringe, and do not share a pen.
Mounjaro injection sites
Mounjaro goes under the skin. The leaflet names your tummy and your thigh. If another person gives the injection, the back of your upper arm can be used too.
Where. Tummy, thigh, or the back of the upper arm if someone else injects you
Rotate. Use a new spot each week. If you also inject insulin, use a different place
When. Any time of day, with or without food, on the same day each week
Mounjaro injection dosage: once a week
The injection dosage is one dose a week. Pick a day and keep to it. You can change the day if at least 3 days pass between two doses. A sore or red spot is common, and the Mounjaro side effects guide covers it.
Mounjaro missed dose
Within 4 days. Inject as soon as you remember, then go back to your usual day
More than 4 days. Skip it and take the next dose on your usual day
Keep at least 3 days between two doses. If you have missed more than one dose, ask your prescriber how to restart. Do not guess.
Can you take a Mounjaro double dose?
No. Never inject two doses to make up for a missed one, and never inject more than once in a week. If you take too much by mistake, speak to your prescriber, pharmacist or NHS 111 the same day, because sickness and dehydration can follow.
Switching from Mounjaro to Wegovy dosage
Mounjaro and Wegovy are different medicines, so their doses do not match and you cannot swap one mg for another. Wegovy has its own ladder, from 0.25mg up to 2.4mg. The MHRA says that switching without medical advice may raise the risk of side effects or make treatment less effective. Your prescriber chooses the Wegovy dose you start on.
| Doses | Mounjaro | Wegovy |
|---|---|---|
| Medicine | Tirzepatide | Semaglutide |
| Starting dose | 2.5mg | 0.25mg |
| Highest dose | 15mg | 2.4mg |
Dose questions people ask
Mounjaro dosage based on weight
The adult doses in the leaflet are not worked out from your weight. Everyone uses the same ladder, and your prescriber sets the pace.
Mounjaro dosage for women
Women follow the same doses. Two points apply. Do not use Mounjaro in pregnancy, and the combined pill may work less well, so add a barrier method for 4 weeks after you start and after each increase.
Mounjaro dosage NHS
The licensed doses are the same on the NHS and privately. What differs is who can get Mounjaro on the NHS, so ask your GP.
Mounjaro price per dose
Providers set their own prices, and the price often rises with the strength. Compare the whole cost: the pen, any consultation fee, any delivery fee, and whether your strength is in stock. A low price means little if the strength you need is out of stock.