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The Science Behind Orlistat's Fat-Blocking Action
Orlistat works through a targeted mechanism that blocks approximately one third of the fat you eat from being absorbed. Unlike appetite suppressants that act on the brain, orlistat works locally in your digestive system by inhibiting pancreatic lipase enzymes. These enzymes normally break down dietary fats into smaller molecules that can be absorbed. When orlistat blocks these enzymes, approximately one third of consumed fat passes through your body undigested and is eliminated naturally.
Why This Mechanism Makes Orlistat Effective
This targeted fat-blocking action reduces calorie intake from dietary fat without affecting protein, carbohydrate, or alcohol absorption. Because fat contains 9 calories per gram compared to 4 calories per gram for protein and carbohydrates, blocking fat absorption can significantly reduce overall calorie intake. Generic orlistat 120mg (from £32.99 for 4 weeks) and branded Xenical 120mg (from £42.99 for 4 weeks) contain identical active ingredients with the same mechanism. Save 10% with code EDM10.
How the Fat-Blocking Process Works
When you take orlistat with a meal containing fat, it binds to lipase enzymes in your stomach and small intestine. This prevents these enzymes from breaking down approximately one third of dietary triglycerides. The undigested fat cannot be absorbed and passes through your digestive system unchanged. This mechanism is directly related to meal fat content - lower fat meals result in fewer gastrointestinal effects while still providing weight management benefits.
Clinical Evidence Supporting the Mechanism
Clinical trials demonstrate that orlistat's enzyme-blocking mechanism consistently reduces dietary fat absorption by approximately 30%. This proven action supports weight management when combined with a reduced-calorie, lower-fat diet and increased physical activity. The mechanism works best when fat intake is distributed across three main meals, with no more than 15g fat per meal to minimise side effects while maintaining effectiveness.
Order Your Orlistat Treatment Today
Now you understand how orlistat's fat-blocking mechanism works, you can make an informed treatment decision. Our UK-licensed prescribers assess suitability through online consultation, with orlistat 120mg from £16.89 (£15.20 with EDM10) and Xenical from £21.50 (£19.35 with EDM10). Complete your clinical assessment today for next-day delivery from our GPhC-registered Leicester pharmacy. The science proves it works - order now to start your weight management journey.
