Mysimba is a prescription-only, weight-loss medicine, for adults over 18 years of age. It contains two active substances:

• naltrexone hydrochloride; and
• bupropion hydrochloride.

You have been prescribed Mysimba to help you manage your weight; together with a reduced calorie diet, and physical exercise.

Body Mass Index (BMI)
Your body mass index (BMI) is used to find out if you need to lose weight. For most adults, a BMI of:³

• 25 to 29.9 means you’re overweight;
• 30 to 39.9 means you’re obese; and
• 40 or above means you’re severely obese.

The body mass index is calculated as your body weight in kilograms (kg) divided by your height squared in metres (m2).
You often see this formula written as BMI = weight in kg/height m²

How to calculate your BMI

To calculate your BMI click on the button below:

* safefood is a source of information for consumers and is not to be taken as an endorsement of Mysimba.
safefood.eu is the website of safefood an independent Public Health organisation.
Consilient Health is not responsible for or involved in the development of content on this website.

Mysimba is approved for use in patients with an initial body mass index of 30 or greater or those with a body mass index of 27 or greater if they have additional weight-related conditions like:
• controlled high blood pressure (hypertension);
• type 2 diabetes; or
• high levels of lipid (fat) in the blood.

If you have been taking Mysimba for 16 weeks and have not lost at least 5 per cent of your initial body weight, your doctor may discontinue your prescription.

Your doctor may also recommend stopping treatment if there are concerns about:
• increased blood pressure; or
• side effects of this medicine; or
• the safety of this medicine.