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Xenical works by preventing about a third of the fat from the food you eat from being digested. The undigested fat is not absorbed, and is passed out with your faeces.
This helps you avoid gaining weight, but does not necessarily cause you to lose weight. Therefore, it’s still important to stick to your recommended diet and exercise plan.
Xenical is usually recommended if you have made a significant effort to lose weight through diet, exercise or changing your lifestyle. Even then, Xenical is only prescribed if you have:
• a body mass index (BMI) of 28 or more and other conditions related to weight, such as high blood pressure
• a BMI of 30 or more
Treatment must be combined with a low-fat diet and other weight loss strategies, such as doing more exercise. Xenical is not recommended for pregnant or breastfeeding women.
How Does Xenical Work?
Who can use Xenical?
What is the difference between Xenical and Orlistat?
What is the difference between Orlistat / Xenical and Alli?
What is the dosage and duration of treatment of Xenical?
One Xenical capsule is taken with each main meal (to a maximum of three capsules daily). You can take the capsule before, during or up to one hour after each meal.
If you miss a meal or the meal does not contain any fat, you may not need to take the orlistat capsule; check the patient information leaflet that comes with your medication.
Treatment with Orlistat (Xenical) should only continue beyond three months if you have lost 5% of your body weight. It usually starts to affect how you digest fat within one to two days. If orlistat has not worked after three months, it is unlikely to be an effective treatment for you.
If you have type 2 diabetes, it can take longer to lose weight using Orlistat (Xenical), so your target weight loss after three months may therefore be slightly lower.
If Orlistat (Xenical) is successful after three months, your prescription may be continued for up to a year. After that, your GP will review your condition and decide whether you should continue with Orlistat (Xenical).
How effective is Xenical?
What are the Side Effects Of Xenical?
Before taking any medication, it is important to read the Patient Information Leaflet. You can find information leaflets for your medicines by typing them into the search bar at medicines.org, or by contacting us.