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Orlistat 120mg 84 Capsules

Orlistat Weight Loss Tablets (120mg)

Orlistat Weight Loss Tablets (120mg) Product information

£29.99 (£0.36 per capsules)

Quantity

You need to complete a consultation before you can purchase this product.
Our Prices
120mg
84 capsules £29.99
168 capsules £58.94
252 capsules £78.94

Buy Orlistat 120mg Weight Loss Capsules

Orlistat 120mg weight loss capsules are a prescription weight loss medication which can help support overall weight loss. It works by reducing the amount of dietary fat absorbed by the body from food.

Our expert clinical team of pharmacists and independent doctors are here to offer safe and supported weight treatment and guidance.

Product Information for Orlistat Weight Loss Tablets (120mg)

Get to know Orlistat weight loss medication

Orlistat can be an effective weight treatment alongside a calorie-controlled diet and increased physical activity. The average weight loss with 12 months of treatment is up to 10%. It comes as a capsule.

  • Take one capsule 3 times a day (with each main meal)

  • Reduce dietary fat absorption by up to a third

  • From £34.98 for a monthly supply

Orlistat 120mg key facts

Orlistat 120mg capsules are licenced in the UK for weight loss and are most effective when used as part of a holistic healthy living approach. Taken 3 times a day (with each main meal), they’re available on prescription in packs of 84, 168 and 252 capsules.  

The active ingredient is Orlistat, a lipase inhibitor, which binds the fat in your food and reduces how much is absorbed by the body. Because of this process, it’s recommended to take a daily multivitamin containing vitamins A, D, E, and K at least 2 hours before or after taking Orlistat.

Remember, always read the Patient Information Leaflet that comes with your medication.

How does Orlistat work for weight loss?

Orlistat works in the body by reducing the amount of fat your body absorbs from the food you eat.

This happens in your digestive system by inhibiting pancreatic and gastric lipases - the enzymes that break down fat. By binding to the fat in your food, Orlistat blocks these enzymes and prevents around 30% of the fat you consume from being absorbed by your body. This unabsorbed fat is then eliminated when you go to the toilet through your bowel movements.

It’s important to note that Orlistat doesn’t have any effect on existing fat cells and only works on the fat contained in the food you eat whilst taking the medication. However, because of reduced fat absorption, your body can use already stored fat for its energy needs, contributing to overall weight loss.

Studies have also shown that patients who made positive changes to their diet, lifestyle and activity levels experienced less weight gain once they stopped treatment.

Am I eligible for Orlistat 120mg?

Orlistat 120mg capsules are only available via prescription in the UK. You might be suitable if the criteria below apply to you, the doctor will complete a clinical review of your completed online assessment and let you know.

  •  Adults aged 18 or over

  •  Those with a BMI of 30 or higher

  •  Those with a BMI of 28 or higher and a weight-related condition such as type 2 diabetes, high blood pressure, or high cholesterol

Remember, completing an online assessment or meeting the initial eligibility criteria doesn’t guarantee you’re suitable for treatment.

Use this NHS tool to calculate your BMI.

Weight loss results using Orlistat

Several studies have demonstrated the potential weight loss results achievable whilst using Orlistat as part of a holistic weight loss plan.

The first 2 weeks

Once you start taking Orlistat, it gets to work fast and will start binding the fat from your food intake within 1-2 days. You may also start to notice weight loss results within 2 weeks of starting treatment.

The first 3 months

Most people can expect to lose up to 5% of their starting body weight during the first 3 months of treatment. If your weight loss is slower than this, let us know.

Months 6-12

After 6-12 months of treatment, the average weight loss supported by Orlistat to be expected is around 10% or more. Individual weight loss will depend on a range of factors, including changes to diet, lifestyle and exercise.

Special dietary instructions

Because Orlistat works by binding to - and then expelling via bowel movements - up to 30% of the fat in the foods that you eat, you should reduce your fat intake to 30% of your total calorie intake.

Distributing your fat intake evenly across your 3 main meals can also help reduce digestive side effects. Consuming meals with very high fat content while taking Orlistat can increase the likelihood of gastrointestinal side effects.

Explore more about what to eat whilst taking Orlistat in our FAQs below and in our dedicated blog, Weight loss – getting the best results from Orlistat.

Orlistat Weight Loss Tablets (120mg) reviews

How to use Orlistat Weight Loss Tablets (120mg)

Orlistat 120mg capsules are a prescription-only medication and should always be taken as directed. You should always read the Patient Information Leaflet that comes with your medication.

How to take Orlistat  

The usual recommended dose of Orlistat 120mg is one capsule 3 times a day before, during or up to one hour after each main meal. This means you will usually take one capsule with breakfast, one capsule with lunch and one capsule with dinner.

The capsule should be swallowed whole with a glass of water.

Alongside treatment, aim for a well-balanced diet where fewer than 30% of calories come from fats. Avoid foods containing fat such as savoury snacks, chocolate and biscuits, between meals.|

Do not exceed 15g of fat per meal while taking Orlistat, as eating more than this can increase the risk of stomach upset, oily stools, and diarrhoea.

How long does Orlistat take to work?

Orlistat capsules normally take 24-48 hours to start working.

If you take Orlistat as directed, you can expect to see weight loss results within a few weeks of starting treatment.

How long does Orlistat stay in your system?

The presence of Orlistat in your system is influenced by your digestive tract and bowel transit time, usually lasting for 12 - 72 hours. Various sources have indicated that after discontinuing Orlistat, faecal fat levels return to their pre-Orlistat levels within 48 - 72 hours.

Side effects of Orlistat Weight Loss Tablets (120mg)

Below we’ve listed some of the ‘Very common’ and ‘Common’ side effects of Orlistat 120mg capsules. You should always read the Patient Information Leaflet that comes with your medication. A copy of this will also be in the medication packaging or box.

Very common side effects (may affect more than 1 in 10 people)

  • Headache

  • Upper respiratory tract infection

  • Abdominal pain/discomfort

  • Oily or fatty stools

  • liquid stools

  • Increased elimination of stools

  • Urgent or increased need to open the bowels

  • Flatulence (wind)

  • Flatulence (wind) with discharge

  • Oily discharge

  • Influenza (‘flu’)

  • Low blood sugar levels

Common side effects (may affect up to 1 in 10 people)

  • Lower respiratory tract infection

  • Rectal pain/discomfort

  • Soft stools

  • Urinary tract infection

  • Irregularity of menstrual cycle

  • Tiredness

  • Inability to control your bowel movements

  • Bloating

  • Tooth/gum disorder

  • Anxiety

If you would like to talk to our Healthcare Advisors about any concerns around side-effects please call us on 01295 262925 or email help@oxfordop.co.uk

Frequently Asked Questions
Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Orlistat Weight Loss Tablets (120mg) - Patient Information Leaflet

References
  1. Healthy Weight Loss In Depth - Mayo Clinic

  2. Orlistat-associated adverse effects and drug interactions: a critical review - PubMed - Theodosios D Filippatos 1, Christos S Derdemezis, Irene F Gazi, Eleni S Nakou, Dimitri P Mikhailidis, Moses S Elisaf

  3. Weight Loss Medicine - Patient Info - Authored by Dr Laurence Knott

  4. Obesity Treatment - NHS

  5. How to use Orlistat 120 Mg Capsule Fat Absorption Decreasing Agents - WebMD

  6. Dietary advice for patients taking orlistat -NHS Department of Nutrition and Dietetics

  7.  Pharmacotherapy. Author manuscript; available in PMC 2018 Sep 19. Published in final edited form as: Pharmacotherapy. 2000 Mar; 20(3): 270–279, Orlistat, a New Lipase Inhibitor for the Management of Obesity, Dr. Amy M. Heck, Pharm.D., Dr. Jack A. Yanovski, M.D., Ph.D., and Dr. Karim Anton Calis, Pharm.D., M.P.H., FASHP

  8. Indian J Endocrinol Metab. 2011 Apr-Jun; 15(2): 99–104., doi: 10.4103/2230-8210.81938, Evaluation of efficacy and safety of orlistat in obese patients, Suyog S. Jain, Sunita J. Ramanand, Jaiprakash B. Ramanand,1 Pramod B. Akat, Milind H. Patwardhan,2 and Sachin R. Joshi

  9. Flushing away the fat - PMC

  10. XENICAL, INN-orlistat - EMA

  11. Mounjaro and orlistat Interactions Checker - Drugs.com

  12. Orlistat - StatPearls - NCBI Bookshelf

  13. Orlistat (Weight Loss Medicine): Uses and Side-Effects - Patient.info

  14. Rössner S, Sjöström L, Noack R, Meinders AE, Noseda G. Weight Loss, Weight Maintenance, and Improved Cardiovascular Risk Factors after 2 Years Treatment with Orlistat for Obesity. Obesity Research. 2000 Jan;8(1):49–61.

  15. McDuffie JR, Calis KA, Booth SL, Uwaifo GI, Yanovski JA. Effects of Orlistat on Fat-Soluble Vitamins in Obese Adolescents. Pharmacotherapy. 2002 Jul;22(7):814–22.

Message From Our Pharmacist

We recommend taking a multivitamin alongside your weight loss medication to ensure you get the necessary nutrients to support healthy weight loss. You can get Centrum Advanced multivitamin tablets here.

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Authored on February 10, 2026

Reviewed on February 10, 2026

Kiran Jones

Kiran Jones - MPharm, MRPharmS

Pharmacist / Medical Content Writer

GPhC Number: 2071585