Why Understanding Orlistat's Mechanism Matters for Results
How Orlistat Blocks Fat Absorption
Orlistat works through a scientifically proven mechanism that targets fat absorption in your digestive system. Unlike appetite suppressants that act on the brain, orlistat inhibits lipase enzymes in your gut that normally break down dietary fat. When these enzymes are blocked, approximately one third of the fat you consume cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your digestive system, reducing the calories your body takes in from fatty foods.
Why "Approximately One Third" Makes a Difference
This specific fat-blocking action means orlistat provides measurable calorie reduction with each fat-containing meal. For someone consuming 60g of fat daily, orlistat may prevent absorption of around 20g - that's 180 fewer calories absorbed per day. The mechanism works directly where fat digestion occurs, making it a targeted approach to weight management. Generic orlistat 120mg delivers this proven effect from just £29.69 for 4 weeks with code EDM10.
Orlistat vs Xenical vs Alli: Same Mechanism, Different Strengths
All three products work through identical fat-blocking action. Orlistat 120mg and Xenical 120mg contain the same active ingredient at full prescription strength - the key difference is cost. Generic orlistat 120mg costs £63.99 for 8 weeks (£57.59 with EDM10) compared to Xenical at £86.99 (£78.29 with EDM10). Alli 60mg uses half the dose, blocking a smaller proportion of dietary fat. Understanding these options helps you choose the most suitable and cost-effective treatment following clinical assessment.
Why the Mechanism Proves Orlistat Works
The fat-blocking mechanism explains why orlistat requires commitment to a lower-fat diet. High-fat meals mean more unabsorbed fat passing through your system, leading to the gastrointestinal side effects that indicate the medicine is working. Keeping meals to approximately 15g fat each minimises side effects while maintaining the weight management benefits. This direct relationship between fat intake and effect proves orlistat's mechanism is both measurable and manageable.
Getting Started: From Mechanism to Results
Now you understand how orlistat blocks approximately one third of dietary fat absorption, you can see why it's prescribed alongside reduced-calorie, lower-fat eating plans. Our online clinical assessment takes minutes to complete, with UK-licensed prescribers reviewing your suitability for treatment. Choose from 2-week starter packs (£16.89 for orlistat, £21.50 for Xenical) or 12-week supplies with maximum savings. Apply code EDM10 for 10% off every order, with next day delivery across the UK from our GPhC-registered Leicester pharmacy.
