The Science Behind Orlistat - Why It Works
How Orlistat Blocks Fat Absorption
Orlistat works through a scientifically proven mechanism that targets lipase enzymes in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. When you take orlistat 120mg with meals, it inhibits approximately one third of these lipases, preventing that portion of fat from being digested and absorbed. This unabsorbed fat passes naturally through your body, reducing the calories you gain from fatty foods.
Why The Mechanism Matters For Your Weight Loss
Unlike appetite suppressants that work in your brain, orlistat acts locally in your gut and isn't absorbed into your bloodstream in significant amounts. This targeted approach means it specifically addresses dietary fat intake - blocking approximately one third while leaving protein and carbohydrate digestion unaffected. Generic orlistat 120mg (from £15.20 for 2 weeks, £29.69 for 4 weeks with EDM10) works through exactly the same mechanism as branded Xenical (from £19.35 for 2 weeks, £38.69 for 4 weeks with EDM10).
What Happens When You Take Orlistat
Each time you take an orlistat capsule with a fat-containing meal, the active ingredient travels to your small intestine where fat digestion occurs. Here it binds to lipase enzymes, blocking approximately one third of them from breaking down dietary fat. The blocked fat cannot be absorbed and is eliminated naturally. This process repeats with each dose - one capsule three times daily with main meals provides consistent fat-blocking throughout the day.
Proven Results Through Clinical Mechanism
The lipase inhibition mechanism has been extensively studied and proven effective when combined with a reduced-calorie, lower-fat diet. By blocking approximately one third of dietary fat absorption, orlistat can support significant calorie reduction over time. However, the mechanism works best when meals contain no more than about 15g fat each - higher fat meals increase the likelihood of gastrointestinal side effects as more unabsorbed fat passes through your system.
Choose Your Orlistat Option Today
Now you understand how orlistat's fat-blocking mechanism works, you can make an informed choice between generic orlistat 120mg and branded Xenical 120mg. Both use identical lipase inhibition to block approximately one third of dietary fat. Generic orlistat offers the same clinical mechanism at a lower cost - 4 weeks costs £29.69 with EDM10 versus Xenical at £38.69. For those preferring a lower-strength option, Alli 60mg uses the same mechanism at half the dose. Complete your online consultation today and our UK-licensed prescribers will assess whether orlistat's proven mechanism is right for your weight management goals.
