Treatment options

Buy XENICAL safely, securely and easily in a few simple steps. Start a consultation today to check your eligibility with a prescribing clinician, at no cost to you.

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Manufactured by Neon Healthcare


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Dispensed in the UK
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Updated on 26 Mar 2024

What to do if you missed your XENICAL dose

The MHRA's reporting program for suspected side effects to medicines, vaccines, e-cigarettes, medical device incidents, defective or falsified (fake) products to the Medicines and Healthcare products Regulatory Agency to ensure safe and effective use.

Learn more about reporting side effects

About Xenical

Xenical contains the active ingredient orlistat. It was develpoed by Roche and is used to help people with obesity to lose weight when exercise and dieting alone have not been successful.

It is used in patients who have a body mass index (BMI) of 30 or more, or a BMI of 28 or more if other risk factors are present, such as diabetes, heart disease, or smoking.

Xenical blocks enzymes (lipases) in your intestine from digesting fat, preventing a third of the fat you consume from being absorbed. This undigested fat is passed out of your body with your stools.

NowPatient offers Xenical as a treatment for weight loss only, following an online consultation with a prescribing clinician.

Key facts of Xenical

  • For the treatment of weight loss
  • When taken in combination with a low calorie-controlled diet and exercise plan, you should see weight loss within the first 13 weeks
  • Xenical has some common side effects which include bloating and wind
  • It can be dangerous if you take Xenical with certain medications. If you’re not sure if it is safe, discuss this with the prescribing clinician
  • A dose of Xenical is not necessary if there is no fat within your food

Who is Xenical suitable for?

Xenical is used in patients who have a body mass index (BMI) of 30 or more, or a BMI of 28 or more if other risk factors are present, such as diabetes, heart disease, or smoking.

Who is Xenical not suitable for?

Xenical may not be suitable for some people. To make sure it’s safe for you, speak to the prescribing clinician before taking Xenical if you:

  • Are allergic to any of the active ingredients of Xenical
  • Have chronic malabsorption syndrome
  • Have liver problems

How and where to get Xenical?

Xenical is available only with a prescription. It is not available over the counter at a pharmacy.

NowPatient does not allow customers to buy Xenical directly. Our service is certified, safe and effective, and we only ever treat conditions. If you book a consultation with a prescribing clinician for the treatment of weight loss, you can discuss if Xenical is a suitable treatment option for you.

At the end of the consultation, the clinician will decide if a treatment plan is suitable for you. If it is, the clinician will issue you with a prescription which can then be ordered, paid for and delivered directly to your chosen address by NowPatient.

Dosage and strength for Xenical for weight loss

Xenical is available as 120 mg capsules when used for weight loss.

Information about how to take Xenical for weight loss

Take one Xenical 120 mg capsule up to three times a day, with or up to one hour after each main meal. A dose of Xenical is not necessary if you have had a low fat meal or if you skip a main meal. Xenical only works if you have eaten a meal containing dietary fat.

Your doctor will stop Xenical weight loss treatment after 12 weeks if you do not lose at least 5% of your body weight from the start of treatment. You are advised to read the patient information leaflet provided with your medication for further information.

What happens if you take too much Xenical?

If you take more than prescribed, then it can lead to some unpleasant side effects. You should talk to your doctor or reach out to one of our prescribing clinicians, if you have taken too much Xenical and you experience any of the following side effects:

What are the side effects of Xenical?

Common side effects of Xenical include:

  • Abdominal pains
  • Bloating
  • An urgent need to open the bowels
  • Fatty liquidy oily stools
  • Constipation
  • Flatulence with an oily discharge

If you experience any serious side effects, you should contact NHS 111.

If you experience a serious allergic reaction with the signs shown below you should contact emergency services on 999.

  • Your lips, mouth, throat or tongue suddenly become swollen
  • You’re breathing very fast or struggling to breathe (you may become very wheezy or feel like you’re choking or gasping for air)
  • Your throat feels tight or you’re struggling to swallow
  • Your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)
  • You suddenly become very confused, drowsy or dizzy
  • Someone faints and cannot be woken up

Always report adverse effects to the MHRA yellow card reporting system. You can read more about this here How and where do I report side effects of my medication? – NowPatient

Information about taking Xenical at the same time as other medications or herbal supplements

There is not enough evidence to suggest there are any drug interactions between herbal supplements and Xenical, but you should let your prescribing clinician know if you are taking medications such as warfarin, levothyroxine, or cyclosporin.

Can Xenical taken for weight loss be taken long term?

If you do not see any results after taking Xenical for 3 months, it may not be suitable for you and should be stopped. If Xenical is working for you, you can take it for up to 2 years.

Is there a herbal Xenical?

No. Herbal Xenical does not exist. If you have been marketed such a formulation, it may be fake.

Can women use Xenical?

Women can take Xenical for weight loss, but is not usually recommended during pregnancy. Speak to your doctor before taking Xenical if you are pregnant, planning to become pregnant, or if you are breastfeeding.

Should I avoid any particular food or drink when taking Xenical?

You can eat and drink normally when taking Xenical. You are advised if you are taking Xenical weight loss medication to take a supplement with your treatment, as you may find it hard to absorb fat-soluble vitamins.

What lifestyle changes can I make to help me with weight loss?

Modify your lifestyle and diet in a number of ways:

  • Balanced diet
  • Cut back on refined carbohydrates
  • Eat more fibre and protein
  • Drink water
  • Regular exercise

Alternatives to Xenical

Alternatives for the treatment of weight loss include Alli, Saxenda, Wegovy, Ozempic, and Mysimba.


Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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