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How Orlistat Blocks Fat Absorption
Understanding what orlistat does is key to making the right treatment choice. Orlistat works by inhibiting lipase enzymes in your digestive system - the enzymes responsible for breaking down dietary fat. When these enzymes are blocked, approximately one third of the fat you eat cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your digestive system and is excreted. Orlistat acts locally in your gut and is not significantly absorbed into your bloodstream, making it different from brain-acting appetite suppressants. At EverydayMeds, you can access this proven fat-blocking medication from £15.20 for a 2-week supply with code EDM10.
What Happens to Blocked Fat
When orlistat blocks approximately one third of dietary fat absorption, this unabsorbed fat must leave your body somehow. The blocked fat passes through your digestive system unchanged and is eliminated naturally in your stools. This is why patients taking orlistat may experience oily stools or increased urgency - these are signs the medication is working as intended. The remaining two thirds of dietary fat is still absorbed and digested normally. This mechanism makes orlistat particularly effective when combined with a lower-fat diet, as recommended by healthcare professionals. Generic orlistat 120mg costs just £32.99 for 4 weeks (£29.69 with EDM10), while branded Xenical costs £42.99 for the same supply - both contain identical active ingredients.
Why This Mechanism Works for Weight Management
By blocking approximately one third of dietary fat absorption, orlistat effectively reduces the calories your body absorbs from fat. Since fat contains 9 calories per gram compared to 4 calories per gram from carbohydrates and protein, reducing fat absorption can significantly impact your calorie balance. This calorie reduction, combined with a reduced-calorie, lower-fat diet and regular physical activity, may support weight loss over time. The mechanism is particularly effective because it works regardless of appetite - even if you feel hungry and eat your planned meals, less dietary fat is absorbed. Our 8-week orlistat supply costs £63.99 (£57.59 with EDM10), providing excellent value for this clinically proven approach.
Orlistat vs Other Weight Loss Approaches
What makes orlistat unique is its specific mechanism of action. Unlike appetite suppressants that act on brain receptors, orlistat works purely in your digestive system by blocking fat-digesting enzymes. This means it doesn't affect your appetite, mood, or energy levels directly. The medication only works when you eat fat - if a meal contains no fat, you can skip that dose. This targeted approach makes orlistat suitable for many adults who want a non-stimulant option for weight management support. Whether you choose generic orlistat 120mg or branded Xenical 120mg, you're getting the same active ingredient at the same dose. Our 12-week supply of generic orlistat costs £95.99 (£86.39 with EDM10) compared to £128.99 for branded Xenical.
Start Your Treatment Following Clinical Assessment
Now you understand exactly what orlistat does and how it blocks approximately one third of dietary fat absorption, you can make an informed decision about treatment. At EverydayMeds, our UK-licensed prescribers will assess your suitability through a comprehensive online consultation. If appropriate, your prescription will be dispensed by our GPhC-registered pharmacy and delivered discreetly to your address. With next-day delivery available and 10% off every order with code EDM10, starting your weight management journey has never been more convenient. Complete your online assessment today and discover how orlistat's proven fat-blocking mechanism could support your weight management goals.


