Mounjaro tirzepatide
Acts on two natural appetite hormones (GLP-1 and GIP), so you feel full sooner and for longer.
- How often
- Once a week
- Starting dose
- 2.5mg
- Maintenance dose
- 5mg to 15mg
- Where
- Tummy, thigh or upper arm
Your consultation, video call and delivery are free. You only pay for Mounjaro if your prescriber prescribes it.
Start free consultationPrices
For a 4-week supply, including free tracked delivery. Your prescriber decides which strength is right for you; most people start on the lowest.
| Strength | 4-week supply |
|---|---|
| 2.5mg Starting dose | Confirmed at your consultation |
| 5mg | Confirmed at your consultation |
| 7.5mg | Confirmed at your consultation |
| 10mg | Confirmed at your consultation |
| 12.5mg | Confirmed at your consultation |
| 15mg | Confirmed at your consultation |
Nothing is charged until a prescriber has approved your treatment and you've agreed to go ahead.
How to take it
- Inject once a week, on the same day each week, at any time of day, with or without food.
- Inject under the skin of your tummy, thigh or upper arm, changing the spot each week.
- Keep pens in the fridge. An unopened pen can be kept at room temperature (below 30°C) for up to 30 days.
Usual dose steps
- Start on 2.5mg once a week for 4 weeks.
- Increase to 5mg. Your prescriber may increase by 2.5mg at a time, at least 4 weeks apart.
- Stay on the dose that works for you, between 5mg and 15mg.
Your prescriber agrees each change with you at your check-ins, based on your progress and any side effects.
What results to expect
In clinical trials, people lost about 20% of their body weight on average over 72 weeks, alongside diet and activity changes.
Results vary from person to person. Trial figures are averages for people who also changed their diet and activity.
Side effects
The most common side effects are feeling sick, diarrhoea, constipation, indigestion and tummy pain. They're usually mild, are most likely when starting or increasing a dose, and tend to settle.
Get urgent medical help if you have a severe allergic reaction, severe or persistent stomach pain, or vomiting or diarrhoea that leaves you dehydrated. Always read the leaflet supplied with your medicine.
Who it isn't suitable for
Mounjaro isn't suitable for everyone. Your prescriber will check your health and medicines on your video consultation. An online service isn't the safest route if you:
- have diabetes
- are pregnant, planning a pregnancy or breastfeeding
- have had an eating disorder, pancreatitis or severe stomach-emptying problems
- have a personal or family history of medullary thyroid cancer or MEN2
How to get started
- Complete our free online consultation. It takes about five minutes.
- Meet a prescriber on a video call to talk through your options.
- If treatment is right for you, it's delivered free to your door.
You don't need to choose Mounjaro in advance. Your prescriber will recommend what suits you.