How Orlistat 120mg Works - Blocks One Third of Fat

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Orlistat 120mg works by blocking approximately one third of dietary fat absorption in your gut. This proven mechanism means unabsorbed fat passes naturally through your body rather than being stored. Available as generic orlistat from £15.20 (2 weeks with code EDM10) or branded Xenical. Our UK-licensed prescribers assess your suitability through an online clinical consultation. Understanding how orlistat works helps explain why it's prescribed for weight management alongside a reduced-calorie, lower-fat diet. Get 10% off every order with EDM10 - start your assessment today.

  • Blocks approximately one third of dietary fat from being absorbed
  • Works locally in your gut - not absorbed into bloodstream
  • Available from £15.20 per fortnight with prescription
  • Same clinical effect whether you choose generic orlistat or Xenical
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pricing for mounjaro and wegovy weight loss

*Pricing shown in some areas of this page may not be up to date. Please refer to the “Our Pricing Table” or the price shown after your consultation for the latest live pricing.

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Why Orlistat's Proven Mechanism Makes It Effective

How Orlistat 120mg Blocks Fat Absorption

Orlistat works through a scientifically proven mechanism that targets lipase enzymes in your digestive system. These enzymes are responsible for breaking down dietary fat so it can be absorbed into your body. Orlistat inhibits approximately one third of these lipases, meaning roughly one third of the fat you eat cannot be digested or absorbed. This unabsorbed fat passes naturally through your digestive system and is eliminated from your body.

This mechanism is why orlistat 120mg requires a prescription and clinical assessment. Generic orlistat costs from £29.69 for 4 weeks with code EDM10, whilst branded Xenical costs £38.69 for the same period - both containing identical 120mg doses with the same fat-blocking effect.

Why This Mechanism Proves Orlistat Works

Unlike appetite suppressants that work on brain chemistry, orlistat's action is direct and measurable. When you take orlistat 120mg capsules three times daily with meals containing fat, you're actively preventing approximately one third of that dietary fat from contributing to your calorie intake. The remaining two thirds of fat is processed normally by your body.

This proven mechanism explains why orlistat is prescribed alongside a reduced-calorie, lower-fat diet. By keeping your meals to around 15g fat each, you minimise side effects whilst maximising the weight management benefits. Our 8-week supply (168 capsules) costs £57.59 with EDM10 - enough to establish this effective routine.

Orlistat vs Xenical - Same Fat-Blocking Mechanism

Both generic orlistat 120mg and branded Xenical 120mg work through identical mechanisms. The active ingredient is the same, the dose is the same, and the fat-blocking effect is the same - approximately one third of dietary fat absorption is prevented with either product.

The key difference is cost. Generic orlistat represents significant savings - our 12-week supply costs £86.39 with EDM10 compared to £116.09 for branded Xenical. Both require the same online clinical assessment by our UK-licensed prescribers and both are dispensed by our GPhC-registered pharmacy in Leicester.

What to Expect When Orlistat Starts Working

Because orlistat works immediately in your gut, you may notice gastrointestinal effects within 24-48 hours of starting treatment. These effects - including oily stools or oily spotting - are actually evidence that the mechanism is working and fat is being blocked from absorption.

Most patients find these effects reduce significantly when they adapt to a lower-fat diet. This is why our prescribers emphasise that orlistat works best when fat intake is distributed evenly across three main meals, with no more than approximately 15g fat per meal. Start your clinical assessment today to access this proven mechanism.

Order Today - Now You Know How It Works

Understanding orlistat's mechanism shows why it's an effective prescription option for weight management. Whether you choose cost-effective generic orlistat from £15.20 per fortnight or prefer branded Xenical, you're accessing the same proven fat-blocking action that inhibits approximately one third of dietary fat absorption.

Complete your online clinical assessment now. Our UK-licensed prescribers will review your suitability, and if approved, your treatment will be dispensed by our GPhC-registered pharmacy with next-day delivery. Use code EDM10 for 10% off every order - new and returning customers welcome.

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