Mounjaro® Weight Management Pen 2.5 mg

Mounjaro® Weight Management Pen is a once-weekly injectable medication used as part of a medically guided weight management programme.

Its active ingredient, tirzepatide, is a dual agonist that acts on both GIP (glucose-dependent insulinotropic polypeptide) receptors and GLP-1 (glucagon-like peptide-1) receptors. This dual mechanism may help support weight management, improve insulin sensitivity and regulate metabolic responses.

Mounjaro® has been approved by the US FDA for the treatment of adults with type 2 diabetes. Clinical studies have also shown its potential role in supporting weight management when used together with appropriate lifestyle measures, making it one of the medical options that may be considered under professional supervision.

This programme requires an appointment with a doctor for consultation and assessment to determine whether the medication is suitable for you.

The medication must be used under the guidance of a qualified healthcare professional
The medication must be prescribed by a doctor
If required, a nurse may assist with the first injection
One-to-one registered dietitian consultation is also available to support your weight management plan*

Mounjaro® may be considered for individuals who:

Have tried different weight management methods without achieving the desired results

Find it difficult to plan meals or maintain a regular exercise routine

Frequently experience a large appetite or snack cravings

Have experienced weight gain after childbirth or due to midlife metabolic changes

Are affected by high blood pressure, high blood sugar, high cholesterol or metabolic syndrome

Prefer an injectable option due to difficulty swallowing oral medication

Suitability must be assessed by a doctor based on your medical history, current health condition and treatment needs.
Mounjaro® may not be suitable for the following individuals:

Women who are pregnant or breastfeeding

Individuals with a known allergy to any ingredient of the medication

Individuals with severe gastrointestinal disease

Individuals with medullary thyroid carcinoma (MTC) or a relevant personal or family history

Individuals with severe kidney or liver impairment

A doctor’s assessment is required before starting treatment.
Mounjaro® is usually injected once weekly. It may be used at any time of the day and is not affected by meal times. It is advisable to inject it on the same day each week, or as instructed by your doctor.

Mounjaro® is administered by subcutaneous injection. The recommended injection areas are the front of the abdomen, the outer thigh or the upper arm.

Prepare the injection penTake out the injection pen and check that the solution is clear and free from visible particles. Attach a new needle.

Set the doseTurn the dose selector to the dose instructed by your doctor.

Clean the injection siteClean the injection area with an alcohol swab.

Inject the medicationInsert the needle vertically into the skin and press the injection button until the indicator shows that the injection is complete.

Hold for a few secondsKeep the needle under the skin for approximately 6 seconds after injection to help ensure the dose has been fully delivered.

Dispose of the needle safelyRemove the used needle immediately after use and dispose of it properly in a sharps container.
Mounjaro® is a prescription medicine and may cause the following common side effects, which are usually mild and more likely to occur during the initial adjustment period:

Nausea or vomiting

Diarrhoea or constipation

Dizziness or tiredness

Reduced appetite

Mild redness or swelling at the injection site

These symptoms commonly occur at the beginning of treatment. As the body adjusts to the medication, they may gradually improve for many users.

Less common but more serious side effects may involve gallbladder disease or pancreatitis. Close monitoring during treatment is therefore important, and medical advice should be sought promptly where needed.

If you experience any side effects, especially if the symptoms are severe or persistent, please speak to your doctor.
How to Store Mounjaro®

Before Opening

Store at 2°C to 8°C in a refrigerator

Do not freeze

Do not place in the freezer

Avoid placing the pen near the cooling element or ice compartment to prevent freezing

After Opening / During Use

The pen may be stored at room temperature, not above 30°C, or in a refrigerator

Keep away from direct sunlight and high temperatures

Replace the pen cap after use to help prevent contamination

Do not use the injection solution if it becomes discoloured, cloudy or contains visible particles or sediment.
During treatment, blood pressure, blood glucose and cholesterol levels may need to be monitored, particularly for patients with metabolic conditions or chronic illnesses.

As body weight decreases, the dosage of existing medications may need to be reviewed and adjusted by a doctor where clinically appropriate.

The use of other weight management medicines at the same time is generally not recommended unless advised by a doctor, as this may affect treatment response or increase the risk of side effects.

Mounjaro® is a personalised prescription medicine. It should not be shared with others. You should not adjust the dosage or stop treatment by yourself. Please follow your doctor’s instructions and attend regular follow-up appointments.
Q: Is Mounjaro® Weight Management Pen only suitable for adults?

A: Suitability for Mounjaro® should be assessed by a qualified doctor based on the individual’s health condition, age, medical history and treatment needs. The dosage and method of use must follow the doctor’s instructions.

Before starting a Mounjaro® weight management programme, a detailed medical assessment is recommended.

Q: How long does it take to see weight management results with Mounjaro®?

A: Results vary from person to person and may depend on factors such as body composition, health condition, diet, lifestyle habits and dosage adjustment.

Your doctor will review your progress and adjust the treatment plan where clinically appropriate.

Q: Does Mounjaro® need to be injected continuously?

A: Mounjaro® should be used according to the prescribed dosage and schedule.

If you experience any discomfort or side effects after injection, please inform your doctor promptly. Your doctor may provide suitable advice or adjust your treatment plan according to your condition.

Q: Can I eat freely after using Mounjaro®?

A: Mounjaro® may support weight management by helping to reduce appetite, slow gastric emptying and increase the feeling of fullness.

However, it should be used alongside a balanced diet and healthy lifestyle habits. It is not intended to replace appropriate dietary management, physical activity or medical follow-up.

Q: Where can I purchase Mounjaro® in Hong Kong?

A: Mounjaro® is regulated in Hong Kong under the Pharmacy and Poisons Ordinance and is classified as a prescription medicine.

If you are considering Mounjaro® or would like to learn more, please consult a doctor at a registered medical centre or clinic to ensure safe and appropriate use.

Q: What should I do if I miss a Mounjaro® injection?

A: If you remember within 4 days / 96 hours of the missed dose, take the missed dose as soon as possible.

If more than 4 days have passed, skip the missed dose and take your next dose at the usual scheduled time.

Do not take two doses at the same time to make up for a missed dose. If you are unsure, please consult your doctor or pharmacist.