Xenical Capsules

From: £34.99

Xenical is a branded medication that contains the active ingredient Orlistat, which is the only licensed medication in the UK for weight loss.

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What is Xenical?

Orlistat is a medication commonly used in the management of Obesity and is produced by Roche Pharmaceuticals. Xenical is licensed for use in people with a body mass index (BMI) higher than 30. It may also be used in individuals who have a BMI over 28 and also suffer from other conditions such as high blood pressure, cholesterol or diabetes.

You can calculate your BMI here.

How does Xenical work?

Xenical contains the active ingredient Orlistat, which acts by reducing the amount of fat absorbed from the gut into the body’s tissues. It binds to and blocks the action of enzymes called lipases, found in the small intestine. These enzymes are responsible for breaking down fats so they can be absorbed into the body cells, blockage of their action by Orlistat prevents fat breakdown and absorption. The unabsorbed fat passes through the GI tract and is out of the body in faeces. Orlistat stops absorption approximately 30% of fat from the gut.

How do I take Xenical?

The recommended dose of Xenical is one capsules (120mg) three times a day. Orlistat should be taken with water immediately before, during or up to one hour after a main meal.

If you miss a meal or have a meal that does not contain any fat you should leave out the Xenical dose. On the other hand if you accidentally miss a dose of Xenical you should take the dose as soon as you remember if it is within one hour of your last meal, if not you should continue taking the medication as normal with your next meal. Do not take any extra doses to make up for missed ones.

Xenical should only be used as part of an overall weight loss programme. Its use should be accompanied by healthy diet and exercise, with the weight being monitored closely. Orlistat should initially be taken for a period of 12 weeks, treatment may only be continued for longer than this if the patient has achieved a weight loss target of 5%.

What diet changes should I make?

Patients should aim to have a well-balanced, mildly hypo-caloric diet (where calories burned outweighs those taken in), the diet should be rich in fruits and vegetables.

Xenical may interfere with the absorption of fat-soluble vitamins (A, D, E and K), patients are therefore recommended to take a daily multivitamin as part of their diet. The multivitamin should be taken 2 hours after taking Xenical or before going to bed.

In addition to diet changes patients should also exercise regularly to optimise weight loss and manage obesity. Exercise should generally be taken 3-5 times a week and each session should last for 30 minutes.

What are the cautions associated with taking Xenical?

Although Xenical is a long established medication it may not be suitable for everyone. In some patients it should not be used at all, whilst in others it should be used with caution. You should always read the patient information leaflet of Xenical before taking it to ensure it is safe for you.

What are the side effects of Xenical?

Xenical like all medications can be associated with certain side effects although not all patients would experience these.

Xenical side effects include:

  • Headache
  • Abdominal pain, bloating & discomfort
  • Fat or oily stools
  • Loose stools
  • Flatulence

If you have a meal containing a very high proportion of fat, the possibility of gastrointestinal side effects when taking Xenical will be increased. For more information about the side effects associated with this medication, please see the patient information leaflet.

Where can I find more information on Obesity, Weight Loss and Xenical?

Please refer to the patient information leaflet for more information on Xenical. For more information on Obesity and Weight Loss see the Conditions category page.

Authored Dec 02, 2015 by Joseph Issac, MPharm
Reviewed Sep 30, 2019 by Prabjeet Saundh, MPharm

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