Xenical is the branded version of the drug Orlistat which is a medicine used to treat obesity. It works in your digestive system to block about one-third of the fat in the food you eat from being digested. Xenical attaches to the enzymes in your digestive system (lipases) and blocks them from breaking down some of the fat you have eaten during your meal. The undigested fat cannot be absorbed and is eliminated by your body. Xenical is indicated in the treatment of obesity along with a low-calorie intake diet. You can buy Xenical online from e-Surgery.

Learn more about Xenical or ask our pharmacist

What is Xenical?

Xenical is used to treat obesity. Xenical attaches to the enzymes in your digestive system that aid the process of breaking down fats from your food. Xenical then works to block the intake of about one-third of the fat in the food you eat.  

How do you take Xenical?

Always take Xenical tablets exactly as your doctor has told you. If you are unsure, check with your doctor or pharmacist if you are not sure. 
Xenical should be taken with a well-balanced calorie-controlled diet that is rich in fruit and vegetables and contains an average of 30% of the calories from fat. 
Your daily intake of fat, carbohydrate and protein should be distributed over three meals.  
You usually take one capsule at breakfast time, lunch time and dinner time. To gain optimal benefit, avoid the intake of food containing fat between meals. 

Side effects of Xenical?

As with any form of medication, Xenical capsules have side effects. For a full list of side effects, please read the Patient Information Leaflet of Xenical.  Below are a few of the common side effects of taking Xenical (Orlistat) capsules: 

  • Headaches 
  • Abdominal pain 
  • Urgent need to open bowels 
  • Oily discharge 
  • Liquid stools 
  • Low blood sugar levels 
  • Upper respiratory infections 
  • Flu 

For a full list of side effects, please read the Patient Information Leaflet of Xenical

Interactions of Xenical with alcohol and food?

Alcohol does not affect the course of treatment. It is recommended that you always follow the nutrition program recommended to you by your doctor in order to get the maximum benefit of treatment. As with any weight-control program, over consumption of fat and calories may reduce any weight loss effected.

Xenical reduces the absorption of some fat soluble nutrients, especially beta-carotene and vitamin E. You should therefore follow your doctor’s advice in taking a well balanced diet rich in fruit and vegetables. Your doctor or pharmacist might suggest you take an additional multivitamin.

Any interactions with other drugs?

Make sure you let our Doctor or Pharmacist known before starting Xenical if you take any other medication.

Xenical may strengthen or weaken the effects of:

  • Anticoagulant drugs (e.g. warfarin).
  • Ciclosporin. Use of Xenical is not recommended.
  • Iodine or levothyroxine.
  • Amiodarone.
  • Medicines to treat HIV, such as retrovirals.
  • Medicines for depression and other psychiatric problems.Orlistat may unbalance an anticonvulsivant treatment, by decreasing the absorption of antiepileptic drugs, thus leading to convulsions. Please contact your doctor if you think that the frequency and/or severity of the convulsions have changed when taking Xenical together with antiepileptic drugs.

    Xenical is not recommended to be used whilst taking acarbose (an anti-diabetic drug).

    Please read the Xenical Patient Information Leaflet for more information.

Is there any reason why I would not be able to take Xenical?

You should not take Xenical if: 

  • You are allergic to any of the ingredients 
  • You have chronic malabsorption syndrome 
  • You have cholestasis 
  • You are breast-feeding 

Why should I take Xenical?

Xenical can help with weight loss as it prevents up take of a third of the fat you eat into stored fat. 

What is the difference between Xenical and Orlistat?

 Xenical and Orlistat have the exact same active ingredient and therefore have the same result. Xenical is the branded version of Orlistat and is therefore more expensive. 

Additional information


Orlistat (Generic Xenical), Xenical


2 week treatment, 4 week treatment, 8 week treatment


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