Question 1

How does Mounjaro work?

Accepted Answer

Mounjaro mimics the gut hormones GLP-1 and GIP in order to suppress appetite, slow digestion and help you feel fuller for longer, leading to weight loss. It also helps regulate your blood sugar levels, which is helpful for weight and blood sugar management.

Question 2

How long does Mounjaro take to work?

Accepted Answer

Mounjaro starts working immediately, but it may take a few weeks for you to see real changes. Some people need higher doses for the best results, but your Voy coach and clinical team will help you find the right dose.

Question 3

Does Mounjaro (Tirzepatide) work for weight loss?

Accepted Answer

Yes, Mounjaro is highly effective for weight loss and is licensed in the UK. Studies show it can help reduce your body weight by over 20% when combined with diet and exercise, compared to just 3% with lifestyle changes alone.

Question 4

What is the BMI requirement for Mounjaro eligibility?

Accepted Answer

Mounjaro is typically prescribed for individuals with a BMI of 30 or higher, or 27+ with weight-related health conditions. To see if you’re eligible, fill out our medical questionnaire and a clinician will be in touch.

Question 5

How much weight can you lose on Mounjaro in a month?

Accepted Answer

How much weight you could lose varies based on things like your starting weight, lifestyle changes and your body’s response to the medication. On average, people lose 3-5 pounds in the first month. With continued use alongside a healthy diet and exercise, you could notice more significant weight loss.

Question 6

How many doses are in a Mounjaro pen?

Accepted Answer

Each Mounjaro pen contains four weekly doses and includes a flow check before each use. After the fourth dose, the pen locks, so you can no longer access any remaining liquid. We’ll send you a new pen every four weeks to keep your treatment on track.

Question 7

Mounjaro dosage

Accepted Answer

Month 1: Start with 2.5mg for the first four weeks
Month 2: Increase to 5mg
Month 3: Dose increases to 7.5mg
Month 4: If tolerated, increase to 10mg
Month 5: Option to increase to 12.5mg
Month 6: Final increase to 15mg

Maintenance dose

This is the dose that best supports long-term weight loss by reducing hunger and cravings while minimising side effects. Your Voy clinical team will help you find the right level for sustained success.

Here’s everything you need to know in our full Mounjaro dosage guide.

Question 8

Why do you have to increase the Mounjaro dose?

Accepted Answer

Your dose is gradually increased to help your body adjust and maximise weight loss, with 15mg being the highest dose tested in clinical trials. However, if you're achieving promising results on a lower dose, feel free to stay at that level – it's all about finding what works best for you.

Question 9

Where should I inject Mounjaro?

Accepted Answer

You can inject Mounjaro in the:Abdomen (at least 5cm from the belly button)ThighsUpper armsRotate injection sites each time to reduce discomfort. If you’re using the upper arm, it's best to ask someone else to administer the injection to make it easier.

Question 10

How to inject Mounjaro?

Accepted Answer

You’ll need to self-inject Mounjaro once a week. The process involves preparing your pen, checking the flow, selecting your dose, injecting into the recommended areas and safely disposing of the needle.

For more details on how to inject Mounjaro properly, read our detailed guide.

Question 11

What should I do if I miss a dose?

Accepted Answer

If 4 days or less have passed, take the missed dose as soon as you remember.If more than 4 days have passed, skip the missed dose and continue with your regular schedule.

Question 12

How can I get Mounjaro for weight loss in the UK?

Accepted Answer

You can buy Mounjaro from Voy, a CQC registered healthcare provider and online pharmacy, or some private weight loss clinics. In some cases, the NHS may refer you to a specialist weight management service.

Mounjaro Injection

What is Mounjaro?

Key benefits of Mounjaro for weight loss:

Mounjaro success stories

"From baby weight to happy weight"

"With Voy, it’s about building habits that last"

“I wish I’d joined Voy sooner”

"I changed my life before turning 60"

Is Mounjaro safe?

How to order Mounjaro

Mounjaro FAQ

Medically reviewed on May 7th, 2025.

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