Weight loss

Aim for steady loss of about 0.5 to 1kg a week by eating fewer calories and being more active. If your BMI is in the ranges above, a prescriber can discuss whether medicine could help alongside this.

Adults with a BMI of 30 or more, or 27 or more with a weight-related health condition, may be suitable. A prescriber decides after your consultation and weight check.

Some act on hormones that control appetite, helping you feel fuller for longer. Another type, available from pharmacies, reduces how much fat your body absorbs. They work alongside diet and activity, not instead of them.

All medicines can cause side effects. The common ones are stomach-related. There are rare but serious risks, such as pancreatitis. A prescriber checks your health and medicines first. See the safety information above.

There is no single best option. Your prescriber will discuss what is suitable for your health, history and preferences.

Some people can, through NHS services that follow NICE criteria, which are stricter than the private criteria. Ask your GP.

Your weight must be checked independently. A questionnaire or phone call alone is not enough.

Weight can come back after stopping. Your prescriber should plan support with you for keeping weight off.

With your consent, we share details of your prescription with your GP.

Hair loss is a listed side effect of some of these medicines. Speak to your prescriber if you notice it.

It varies from person to person. Losing weight steadily, about 0.5 to 1kg a week, means changes build up gradually. Weighing yourself once a week, at the same time of day, gives a fairer picture than daily weighing.

For most people, losing weight steadily, about 0.5 to 1kg a week, is the safest way and the most likely to last. Very low calorie diets are not suitable for most people and should only be followed with medical supervision.

There is no single best diet. The NHS advises a balanced diet you can keep to, with fewer calories, plenty of fruit, vegetables and fibre, and fewer sugary drinks and snacks. The free NHS Better Health weight loss plan can help you start.

Adults are advised to do at least 150 minutes of moderate activity a week, such as brisk walking. Being more active helps alongside eating fewer calories. Start slowly if you are not used to exercise.