The Science Behind Orlistat - Why It Works for Weight Loss
How Orlistat Blocks Fat Absorption
Orlistat works through a scientifically proven mechanism called lipase inhibition. When you take orlistat with meals, it blocks enzymes called lipases in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. By inhibiting approximately one third of lipase activity, orlistat prevents roughly one third of the fat you eat from being digested and absorbed. This unabsorbed fat passes naturally through your body, reducing the calories you gain from dietary fat.
Why This Mechanism Makes Orlistat Effective
Understanding how orlistat works helps explain why it can support weight management when used alongside a reduced-calorie, lower-fat diet. Generic orlistat 120mg costs from £29.69 for 4 weeks with EDM10, offering the same proven mechanism as branded alternatives. The medication acts locally in your gut rather than affecting your brain or central nervous system, making it different from appetite suppressants.
Orlistat vs Xenical vs Alli - Same Mechanism, Different Strengths
All three products work through the same fat-blocking mechanism. Orlistat 120mg and Xenical 120mg contain identical active ingredients and block the same proportion of dietary fat - approximately one third. Generic orlistat offers significant savings at £57.59 for 8 weeks with EDM10, compared to Xenical at £78.29. Alli 60mg provides half the dose, blocking a smaller proportion of fat, and costs £49.49 for 8 weeks with EDM10.
What to Expect When Orlistat Works
Because orlistat blocks approximately one third of dietary fat absorption, you may notice gastrointestinal effects - these are actually signs the medication is working. Keeping meals low in fat (approximately 15g per meal) helps minimise side effects while allowing the fat-blocking mechanism to work effectively. The unabsorbed fat must leave your body naturally, which explains the digestive side effects some patients experience.
Maximising Orlistat's Fat-Blocking Effect
Take one 120mg capsule with each main meal containing fat, up to three times daily. If you skip a meal or eat a fat-free meal, you can omit that dose. This targeted approach ensures orlistat's lipase-inhibiting mechanism works when you need it most. Our 12-week supply (252 capsules) costs £86.39 with EDM10, providing sustained treatment to support your weight management goals.
Order Orlistat Online - GPhC-Registered Pharmacy
Now you understand how orlistat blocks approximately one third of dietary fat through proven lipase inhibition, you can make an informed treatment decision. Complete our online clinical assessment for review by UK-licensed prescribers. If approved, we'll dispense and dispatch your medication with next day delivery. Use code EDM10 for 10% off every order from our Leicester-based, GPhC-registered pharmacy.
