The Science Behind Orlistat's Fat-Blocking Action
How Orlistat Blocks Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes are responsible for breaking down dietary fat so it can be absorbed into your bloodstream. When orlistat blocks these enzymes, approximately one third of the fat you eat cannot be digested or absorbed. This unabsorbed fat passes naturally through your digestive system and is eliminated from your body.
Why This Mechanism Makes Orlistat Effective
Unlike appetite suppressants that work in the brain, orlistat acts locally in your gut. This targeted action means it directly reduces the calories absorbed from dietary fat - approximately 9 calories per gram of blocked fat. When combined with a reduced-calorie, lower-fat diet, this mechanism can support meaningful weight management. Generic orlistat 120mg costs just £29.69 for 4 weeks with code EDM10, making this proven mechanism accessible and affordable.
Orlistat vs Xenical vs Alli: Same Mechanism, Different Strengths
All three products use the same fat-blocking mechanism. Orlistat 120mg and Xenical 120mg contain identical active ingredients at the same dose - the key difference is cost. Generic orlistat offers the same clinical effect as branded Xenical but saves approximately £9 monthly. Alli 60mg provides the same mechanism at half the strength, blocking a smaller proportion of dietary fat. Understanding this helps you choose the right option for your weight management journey.
What to Expect When Orlistat Blocks Fat
The fat-blocking mechanism creates predictable effects. When orlistat prevents fat absorption, you may notice oily stools or increased bowel movements - these are signs the medication is working as intended. Keeping meals low in fat (approximately 15g per meal) minimises these effects whilst maximising the weight management benefits. Our prescribers provide detailed guidance on managing your diet alongside treatment.
Order Your Orlistat Treatment Today
Now you understand how orlistat's fat-blocking mechanism works, you can make an informed decision about treatment. Complete our online clinical assessment to have your suitability reviewed by UK-licensed prescribers. We offer orlistat 120mg from £15.20 for 2 weeks, Xenical from £19.35, and Alli from £26.09 with code EDM10. All treatments are dispensed by our GPhC-registered Leicester pharmacy with discreet next day delivery across the UK.
